The last four years of returns for a stock are shown? here: LOADING... . 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. Question content area bottom Part 1 a. What is the average annual? return? The average return is enter your response here?%. ?(Round to two decimal? places.)Year 1 2 3 4 Return (%) -3.58 28.43 12.05 3.68