Rohan Chatterjee is planning to invest in mutual funds. His sole instruction to his portfolio manager is to generate a minimum return of 5%. The mutual funds in which the portfolio manager can invest are given in the following exhibit.Exhibit: Potential Mutual FundsMutual Fund Mean Return Std. Dev. of ReturnX 10% 3%Y 12% 4%Z 9% 2%The portfolio manager must invest in: