Facebook's historical year-end adjusted closing stock prices are as follows 4. 2014 2015 2016 2013 $78.02 $93.24 $115.05 $54.65 a) Calculate annual rates of return for each year (2014, 2015, 2016) (3 points) b) What is the arithmetic average annual return for Facebook using the data above? (3 points) c) What is the geometric average annual return for Facebook using the data above? (3 points)