QUESTION 2 When using the internal rate of return (IRR) investment rule, we compare: O a. the average return on the investment opportunity to the risk-free rate of return. b.the average return on the investment opportunity to returns on all other investment opportunities in the market. O c. the NPV of the investment opportunity to the average return on the investment opportunity. O d. the average return on the investment opportunity to returns on other alternatives in the market with equivalent risk and maturity. O e. all of them