1. Assume that the stock with the largest market capitalization in the S&P 500 increases by 10% on April 25 while the stock with the smallest market capitalization decreases by 10% on that same day. The prices of all other stocks in the index do not change on April 25. What will happen to the index on April 25?

a) it will increase

b) it will decrease

c) it will not change

d) need more information