REIT C (REIT is a real estate investment trust) had returns of 14 percent, 3 percent, 9 percent, and -12 percent annually for the past four years. What is the mean and standard deviation of these returns?

A. 3.50%; 11.26%

B. 3.50%; .0069

C. 9.50%; .0100

D. 3.50%; .0381

E. 9.50%; .0033