Stock Prices Year Stock A Stock B 2015 $72.42 $83.93 2016 $69.56 $66.34 2017 $63.75 $70.93 2018 $72.95 $90.01 2019 $71.17 $98.99 2020 $110.74 $107.68 c.) Calculate the yearly (2016, 2017, 2018, 2019, and 2020) percentage change return for Stock A and Stock B (3 points) d.) Based on the percentage returns calculated, what is the standard deviation and the coefficient of variation for Stock A and Stock B? Which one has the better riskreturn tradeoff? (4 points) e.) Assume you invest in both stocks (portfolio), what is the standard deviation and coefficient of variation? Is the portfolio a better option than investing in each stock individually? (4 Points)