Multiple options must be selected

Alice and Bob have access to the following 3 investment options: portfolio A (expected return of 15% and volatility of 10%), portfolio B (expected return of 27% and volatility of 20%), and the risk-free asset with the risk-free rate of return of 1%. Alice and Bob each have optimally invested $1,000 of their own funds into one of the risky portfolios and the risk-free asset. Alice is more risk-averse. Alice has chosen to invest $600 into the risk-free asset and $400 into one of the risky portfolios. Bob invested $400 into the risk-free asset and $600 into one of the risky portfolios. Which of the following is/are CORRECT? Bob's overall portfolio has a higher expected return than Alice's overall portfolio. For the risky portfolio choice, Alice has chosen portfolio A and Bob has chosen portfolio B. Alice's and Bob's overall portfolios have the same Sharpe ratios. For the risky portfolio choice, Alice and Bob have both chosen portfolio A. Bob's overall portfolio has a higher Sharpe ratio than Alice's overall portfolio