Nubela Manufacturing is considering two alternative investment proposals with the following data: Proposal Proposal Y Investment $10,000,000 $560,000 Useful life 5 years 5 years Estimated annual net cash inflows for 5 years $2,000,000 $97,000 Residual value $58,000 $32,000 Depreciation method Straight-line Straight-line Required rate of retum 12% 12% Calculate the payback period for Proposal TEBE 4 years B. 5 years C. 7 years OD. 9 years