Ten annual returns are listed in the following table:  

−19.7%

16.7%

18.2%

−49.8%

43.6%

1.6%

−16.4%

45.7%

44.8%

−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?