answer both parts of this question

The common stock of Poppy Inc. has yielded 14.2 percent, 21.7 percent, 3.4 percent and -9.0 percent over the past four years, respectively. What is the geometric average return? 8.22 percent 9.27 percent 6.94 percent 7.03 percent Question 7 A stock has yielded returns of 9 percent, 20 percent, and -8 percent over the past three years, respectively. What is the standard deviation of these returns? 14.11 percent 16.38 percent 12.05 percent 10.86 percent