Ten annual returns are listed in the following table: (Click on the following icon in order to copy its contents into a spreadsheet.) \begin{tabular}{cccccccccc} \hline19.9% & 16.6% & 18.0% & 50.0% & 43.3% & 1.2% & 16.5% & 45.6% & 45.2% & 3.0% \\ \hline \end{tabular} 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.)