-30.9%, 53.5% A

-1.5%, 21.4% B

-10.8%, 32.1% C

30.9%, 74.9% D

The average annual return over the period 1926-2009 for the S&P 500 is 11.3%, and the standard deviation of returns is 21.1%. Based on these numbers, what is a 95% confidence interval for 2010 returns