The stock with the highest expected return is ABC ..

The stock with the lowest expected return is XYZ

Explain this by the risk measures calculated in Q2

In Q2, we see ABC has a standard deviation of 6.060% and a beta of 1.42, and XYZ stdev of 2.822% and a beta of 0.91

For these two stocks identify one business/financial risk for each stock that contributes to the amount of systematic risk involved.

Please if you could explain how the beta and standard deviation impact the measure of risk.