please write the steps

Problem 4 (30 points) The following Table displays historical data for shares alpha and gamma returns. Year Alpha Gamma 2016 0.08 0.10 20170.10 0.05 2018 0.07 0.12 2019 0.06 0.08 a. Calculate the standalone risk for each share. Show steps and comment the results. b. You invested 1200 KD in share Alpha and 800 KD in share Gamma. Based on this information, create a portfolio, calculate the annual returns accordingly and find its standalone risk. Comment the result obtained