The beta and standard deviation of AAA Corp., BBB Corp., and…

The beta and standard deviation of AAA Corp., BBB Corp., and CCC Corp. common stock are given in the following table:   Stock Beta Standard Deviation AAA Corp. 0.43 52% BBB Corp. 0.82 81% CCC Corp. 1.24 35%   Which stock is the riskiest to a diversified investor who spreads her portfolio equally across 100 stocks from different industries?