I've been trying to answer this on excel but it keeps giving me wrong and this is my last trial. Help me answer this, and thank you !

Mikhail's Dilemma. Mikhail Khodorkovsky was one of the infamous Russian oligarchs, accumulating billions of dollars in wealth in the mid-1990s with the fall of the Soviet Union. But in 2003 he had been imprisoned by the Russian state for a decade. Upon his release from prison in 2013, he had taken up residence in Switzerland with his money. In November 2014, Mikhail held a portfolio of USD210 million and CHF164 million in Swiss banks, in addition to accounts in Russia still holding RUB1.8 billion. Using the exchange rate table, answer the following: a. What is the value of Mikhail's portfolio measured in Russian rubles? b. What is the value of Mikhail's portfolio measured in Swiss francs? c. What is the value of Mikhail's portfolio measured in U.S. dollars? d. Which currency demonstrated the greatest fluctuations in total value over the six dates? Russo-Swiss Cross-2015 Switzerland has long served as a cornerstone of banking conservatism and a safe port in a world of currency storms. Swiss banks had long been used by investors from all over the world as financially secure institutions that would preserve the depositor's wealth with confidentiality. A large part of the security offered was the Swiss franc itself. Russian citizens of wealth had used Swiss banks heavily in recent years as a place where they could shelter their capital from politics, both inside Russia and the outside (EU and US) world. But beginning in the fall of 2014 the Russian ruble's value began to slide against the Swiss franc, threatening their wealth. (Click on the icon to copy the table below into a spreadsheet.) Exchange Rates Russian rubles per Swiss franc Russian rubles per U.S. dollar U.S. dollars per Swiss franc Nov. 7, 2013 35.286 32.404 1.0889 Nov. 7, 2014 48.255 46.726 1.0327 Dec. 4, 2014 56.247 54.418 1.0336 Dec. 16, 2014 70.287 67.512 1.0411 Dec. 24, 2014 55.361 54.624 1.0135 Jan. 16, 2015 76.642 65.069 1.1779 a. What is the value of Mikhail's portfolio measured in Russian rubles? Calculate the portfolio value as measured in rubles. (Round to the nearest ruble.) Portfolio value as measured in rubles Russian ruble account balance Swiss franc account balance U.S. dollar account balance Total November 7, 2013 November 7, 2014 December 4, 2014 Calculate the portfolio value as measured in rubles. (Round to the nearest ruble.) Portfolio value as measured in rubles Russian ruble account balance Swiss franc account balance U.S. dollar account balance Total December 16, 2014 December 24, 2014 January 16, 2015 b. What is the value of Mikhail's portfolio measured in Swiss francs? Calculate the portfolio value as measured in francs. (Round to the nearest franc.) Portfolio value as measured in francs Russian ruble account balance Swiss franc account balance U.S. dollar account balance Total November 7, 2013 November 7, 2014 December 4, 2014 Calculate the portfolio value as measured in francs. (Round to the nearest franc.) Portfolio value as measured in francs Russian ruble account balance Swiss franc account balance U.S. dollar account balance Total December 16, 2014 December 24, 2014 January 16, 2015 Calculate the portfolio value as measured in dollars. (Round to the nearest dollar.) Portfolio value as measured in dollars Russian ruble account balance Swiss franc account balance U.S. dollar account balance Total December 16, 2014 December 24, 2014 January 16, 2015 d. Which currency demonstrated the greatest fluctuations in total value over the six dates? (Select the best choice below.) O A. The currency which demonstrated the greatest fluctuations in total value over the six dates is the Russian ruble. OB. The currency which demonstrated the greatest fluctuations in total value over the six dates is the Swiss franc. O C. The currency which demonstrated the greatest fluctuations in total value over the six dates is U.S. dollar