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The risk-free rate, average returns, standard deviations, and betas for three funds and the S&P 500 are given below. Compute the Treynor measure, Sharpe ratio, and Jensen's alpha for portfolio A, B, and C. Based on each measure, which portfolio shows the best performance?

Fund|Avg|Std Dev|Beta

A |18% |30%|1.05%

B |25% |35%|1.3%

C |20% |25%|1.2%

S&P 500|15%|20%|1.0%

rf |5%