Ten annual returns are listed in the following table: -19.8% 16.3% 17.9% -49.3% 43.9% 1.5% -16.7% 46.5% -3.2% a. What is the arithmetic average return over the 10-year period? b. What is the geometric average return over the 10-year period? c. If you invested $100 at the beginning, how much would you have at the end