The historical returns for two investrnents-A and B-are summarized in the following fable for the period 2016 to 2020 , HBB . Use the data to answer the questions thuf follow. a. On the basis of a review of the return data, which investment appears to be more risky? Why? b. Calculate the standard deviation for each investment's returns. c. On the basio of your calculations in part b, which investment is more risky? Corripare this conckusion to youir observation in part a. a. On the basis of a review of the roturn data, which irvestment appears to be more risky? Why? (Chooce the best answer below.? A. Investment A and investment B have equal risk bechuse the averape returns ase the same. B. The riskier investment appears to be investment B, with roturns that vay widey from the average relative to livestment A, whoso returs ahow iess deniation from the averagn C. The riskier investment appears to be investment B, with returne thit are closer to the average relative to investrment A, whose refurns arn farther fom the uversge