you are deciding between two mutually exclusive investment opportunities. both require the same initial investment of million. investment a will generate million per year​ (starting at the end of the first​ year) in perpetuity. investment b will generate million at the end of the first​ year, and its revenues will grow at per year for every year after that. a. which investment has the higher​ irr? b. which investment has the higher npv when the cost of capital is ​? c. in this​ case, for what values of the cost of capital does picking the higher irr give the correct answer as to which investment is the best​ opportunity?