Your client has the following portfolios: Portfolio X Total return = 9% Standard deviation = 9 Portfolio Y Total return = 7% Standard deviation = 6 The risk-free rate in the market is 3%, and the market return is 10%. If the Sharpe index is used to assess performance, which one of the following is a true statement? Portfolio X outperformed Portfolio Y. Portfolio Youtperformed Portfolio X. Portfolio X had the same risk-adjusted performance as Portfolio Y. Portfolio Y incurred greater risk than Portfolio X