18、Johnson Inc. manages a growth portfolio of equity securities that has had a mean monthly return of 1.4% and a standard deviation of returns of 10.8%. Smith Inc. manages a blended equity and fixed income portfolio that has had a mean monthly return of 1.2% and a standard deviation of returns of 6.8%. The mean monthly return on Treasury bills has been 0.3%. Which of the following statements is most accurate?
A) Based on the Sharpe ratio, the performance of the Johnson portfolio is preferable to the performance of the Smith portfolio.
B) The Johnson portfolio has greater excess return per unit of risk than the Smith portfolio.
C) The Sharpe ratio shows that the Johnson and Smith portfolios have exhibited the same risk-adjusted performance.
D) Based on the Sharpe ratio, the performance of the Smith portfolio is preferable to the performance of the Johnson portfolio. |