SOR 5 years Nubela Manufacturing is considering two alternative investment proposals with the following data: Proposal Proposal Y Investment $10,300,000 $550,000 Useful life 5 years Estimated annual net cash inflows for 5 years $2,060,000 $97.000 Residual value $54,000 $33,000 Depreciation method Straight-line Straight-line Required rate of return 14% 12% Calculate the payback period for Proposal X OA. 5 years OB. 8 years O C. 9 years OD. 4 years