You are considering investing in a new gold mine in South Africa. Gold in South Africa is buried very deep, so the mine will require an initial investment of $270 million. Once this investment is made, the mine is expected to produce revenues of $32 million per year for the next 20 years. It will cost $13 million per year to operate the mine. After 20 years, the gold will be depleted. The mine must then be stabilized on an ongoing basis, which will cost $5.1 million per year in perpetuity. Calculate the IRR of this investment. (Select the best choice below.) A. The IRR is infinite as a result of the perpetuity. B. There are multiple IRRs. C. No positive IRR exists since the NPV, calculated as a function of various discount rates, never equals or exceeds zero. D. The IRR is about 10%