Posts A stock has annual returns of 5 percent, 21 percent, -12 percent, 7 percent, and 6 percent for the past five years. The arithmetic average of these returns is percent while the geometric average return for the period is percent. Select one: a. 5.80; 4.86 b. 5.80; 5.03 c. 5.62; 5.03 d. 5.40;5.03 e. 5.40; 4.86