Over the last four years, the common stock of Cars Corporation has had an arithmetic average return of 7.2 percent. Three of those four years produced returns of 12 percent, 9.6 percent, and 2.5 percent. What is the geometric average return for this 4-year period? O 8.03 percent O 7.13 percent O None of the answers is correct. O 7.83 percent 4.71 percent