10 years 10 years Redwood Corporation is considering two alternative investment proposals with the following data: Proposal X Proposal Y Investment $810,000 $508,000 Useful life Estimated annual net cash inflows for 10 years $105,000 $53,000 Residual value $16,000 $- Depreciation method Straight-line Straight-line Required rate of return 16% 12% How long is the payback period for Proposal Y? O A. 50.63 years B. 31.75 years O c. 9.58 years OD. 7.71 years