Redwood Corporation is considering two alternative investment proposals with the following data: Proposal X $800.000 9 years Proposal Y $536,000 9 years Investment Useful life Estimated annual net cash inflows for 9 years Residual value Depreciation method Required rate of return $81,000 $130,000 $38,000 Straight-line 12% Straight- line 5% How long is the payback period for Proposal Y? O A. 21.05 years O B. 14.11 years O C. 6.62 years O D. 6.15 years