Could u please write the answer don't take capture.

You are considering the three securities listed below. Stock C Probability 20% 50% 30% 5% Returns Stock B -3% 8% 20% Stock A 2% 10% 15% 8% 12% a. Calculate the expected return for each security. b. Calculate the standard deviation of returns for each security. c. Compare Stock A with Stocks B and C. Is Stock A preferred over the others