An investment manager's portfolio generated a rate of return of 10.9% over the past year. The portfolio's beta was 1.12 and its return standard deviation was 18.3% per year. The risk-free interest rate was 1.5% per year. What was the portfolio's Sharpe ratio? 1) 0.59 2) 0.39 3) 0.51 4) 0.30 5) 0.44