(Click on the icon located on the top-right corner of the data table below in order to copy its contents into a spreadsheet.) Year Return 2 +27.8% 3 + 12.4% 4 +4.4% -4.5% a. What is the average annual return? b. What is the variance of the stock's returns? c. What is the standard deviation of the stock's returns? Note: Notice that the average return and standard deviation must be entered in percentage format. The variance must be entered in decimal format. (Click on the icon located on the top-right corner of the data table below in order to copy its contents into a spreadsheet.) Year Return 2 +27.8% 3 + 12.4% 4 +4.4% -4.5% a. What is the average annual return? b. What is the variance of the stock's returns? c. What is the standard deviation of the stock's returns? Note: Notice that the average return and standard deviation must be entered in percentage format. The variance must be entered in decimal format