What is the S&P 500 index? O A. An index based on the Dow Jones' most profitable firms. B. An index based on the stock prices of 500 of the largest firms by market value. O C. An index based on the stock prices of 500 of the most profitable firms. D. An index based on the net incomes of the 500 largest publicly owned firms. In July 2009, the S&P index was at 1,000 and in November 2015, the S&P index was at 1,220. If you had invested $17,500 in July 2009 and your investments had increased in value by the same percentage as the S&P 500 index had increased, today you would have a portfolio worth $ (Enter your response as an integer.) Assume that the total stock market holdings of the household sector were $10 trillion. Evidence suggests that the "wealth effect" of stock market holdings on consumer spending is about 4 percent of wealth annually. The amount of spending you would expect to see from wealth holdings of $10 trillion is $ trillion. (Round your response to two decimal places.) Assuming a multiplier of 3, you would expect the amount of additional GDP from increased spending (expected from wealth holdings of $10 trillion) would be $ trillion. (Round your response to two decimal places.)