Nubela Manufacturing is considering two alternative investment proposals with the following data: Investment Useful life Estimated annual net cash inflows for 5 years Residual value Depreciation method Required rate of return Calculate the payback period for Proposal X. Proposal X $11,000,000 5 years Proposal Y $580,000 5 years $95,000 $30,000 $2,200,000 $53,000 Straight-line Straight-line 12% 10% OA. 9 years B. 10 years C. 5 years D. 4 years