wich one would you choose?

Which of the following statements are true of the Efficient Frontier and Investment opportunity set? Select one or more: a. The curvature of the efficient frontier is UNAFFECTED by the cross-correlations of the various original assets forming the investment set b. Expected returns of a portfolio on the graph of risk and return is a linear weighted mixture of the expected returns of the composing assets c. The investment opportunity set is often depicted as bounded (limited size) in most textbooks d. Assets that fall outside of the investment opportunity set will ALWAYS be preferred to those within the set e. The investment opportunity set is probably bounded on the total risk one can actually expose themselves to 1. The depiction of the investment set assumes that assets are infinitely divisible (Ex. you may own 0.000000000000001% of a share)