B 11-12 (book/static) Question Help Ten annual returns are listed in the following table: -19.9% 16.6% 18.0% -50.0% 43.3% 1.2% -16.5% 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