I already got (a) is 12% and (b) is NO, but I do not know appropriate answer for (c) and (d)

A mutual fund is expected to generate a return of 11% this year. It has a beta of 0.8. The risk free return in 4% and the rate of return on a market portfolio is 14%. (a) What return would you expect to receive before you would be willing to invest? (b) Is the fund attractive? (c) How could you invest in the market index and in the risk free rate to create a portfolio with the same risk as the mutual fund? (d) Why must an investment produce an expected return in excess of that predicted by the security market line to be considered attractive to investors