You purchased 400 shares of KNO stock five years ago and have earned annual returns of 8.3 percent, 9.6 percent, 18.25 percent, -7.7 percent, and 1.8 percent, respectively. What is your arithmetic average return?

Group of answer choices

5.47 percent

6.05 percent

6.23 percent

6.47 percent

8.01 percent