You find a certain stock that had returns of 4 percent, -5 percent, -15 percent, and 16 percent for four of the last five years. The average return of the stock for the 5-year period was 13 percent. What is the standard deviation of the stock's returns for the five-year period?

Answer

	a.	27.16 percent
	b.	21.39 percent
	c.	24.98 percent
	d.	34.02 percent
	e.	31.23 percent