Assume that the S&P 500 composite index is 995.50. This means that a)the average stock in the index is selling for $99.55 b)an investor would have to pay $995.50 to purchase one share of each of the stocks represented in the index c)the market values of the stocks in the index increased by a factor of 99.55 since the 1941-1943 base period d)the share prices of the stocks in the index have risen 995.50 times since 1941