The opportunity cost of making an investment is: Group of answer choices not relevant when applying the NPV method. equal to the required discount rate. the initial cash outlay of the investment. The opportunity cost of making an investment is: Group of answer choices not relevant when applying the NPV method. equal to the required discount rate. the initial cash outlay of the investment. the cost of forgoing a benefit from an alternative investment. the cost of forgoing a benefit from an alternative investment.