1. Over the past four years a stock had returns of 10%, -8%, 23%, and 0%, respectively. What was the geometric average return on this stock?

   	A.	5.63%
   	B.	7.57%
   	C.	8.11%
   	D.	6.25%

2. The common stock of Air Express had annual returns of 11.7 percent, 8.8 percent, 16.7 percent, and 7.9 percent over the last four years, respectively. What is the standard deviation of these returns?

   	A.	8.29 percent
   	B.	7.78 percent
   	C.	11.54 percent
   	D.	10.66 percent