D Question 9 12.5 pts Suppose that a futures trader has an initial margin of $6,000 in her brokerage account. The maintenance margin is 75 percent. If the equity in her account falls by $4,200, the account holder has to come up with a variation margin of: a $800 in cash, or, letter of credit, or, short term Treasury securities b. $800 in cash c. $1800 in cash, or, letter of credit, or short term Treasury securities d. $800 in cash The next two questions are based on the following data for gold and platinum futures (where prices are in dollars per troy ounce and margin account balances do not earn any interest) Trading June Gold Futures April Platinum Futures Date 100 troy oz. per contract 50 troy oz. per contract Jan 20 1,594.50 1,874.50 Jan 21 1,592.40 1,878.50 Jan 22 1,597.70 1,883.10 Suppose that you go short three contracts of April platinum futures on January 20 and long 2 contracts of June gold on January 21. Then the value of your portfolio at the closing of January 22 has changed by a. -$230 b. - $100 C. +$100 ordings d. +$730