A Stock Had Annual Returns of 8 Percent,-2 Percent,4 Percent,and

Multiple Choice

A stock had annual returns of 8 percent,-2 percent,4 percent,and 20 percent over the past four years.What is the standard deviation of these returns?

A) 16.33%
B) 16.09%
C) 7.10%
D) 9.29%
E) 7.99%