Risk-Adjusted Performance Metrics Evaluation

ABC Asset Management recently completed an analysis of its equity fund's performance over the last five years. The fund reported an annual return of 10%, and the standard deviation of returns was 15%. Additionally, the fund had a beta of 1.2 relative to the market. The risk-free rate at the time of the analysis was 3%, and the expected market return was 8%. ABC Asset Management is interested in evaluating the fund's performance using different risk-adjusted measures.

Which of the following risk-adjusted performance metrics indicates the superior performance of the fund over the market?