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 ratio is used to assess performance, A) Portfolio X had the same risk-adjusted performance as Y. B) Portfolio Y incurred greater risk than X. C) Portfolio Y outperformed X. D) Portfolio X outperformed Y.