Juniper Corporation is considering two alternative investment proposals with the following data: Investment Useful life Estimated annual net cash inflows for 10 years Proposal X $840,000 10 years $115,000 Proposal Y $451,000 10 years. $58.000 Residual value Depreciation method $48,000 $- Straight-line Straight-line Required rate of return 10% 5% How long is the payback period for Proposal X? m OA. 17.5 years OB. 73 years OC. 14.48 years OD. 778 years