Ten annual returns are listed in the following table: (Click on the following icon in order to copy its contents into a spreadsheet.) -19.6% 16.2% 18.3% -49.8% 43.7% 1.1% -16.4% 46.4% 45.3% -3.9% 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? a. What is the arithmetic average return over the 10-year period? The arithmetic average return over the 10-year period is %. (Round to two decimal places.)