Suppose the expected return of Stock A is 13%, the standard deviation is 17%, beta is 0.85, the risk-free rate is 5%. Whats Stock A reward-to-risk ratio? Under or overvalued?

Suppose the expected return of Stock B is 15%, the standard deviation is 20%, beta is 1.85, the risk-free rate is 5%. Whats Stock B reward-to-risk ratio? Under or overvalued?

Suppose the expected return of the Market is 14%, the standard deviation is 19%, the beta is 1, the risk-free rate is 5%. Whats the Market reward-to-risk ratio? Under or overvalued?