Juniper Corporation is considering two alternative investment proposals with the following data: Investment Useful life Estimated annual net cash inflows for 7 years Residual value Depreciation method Required rate of return How long is the payback period for Proposal X? O A. 14.21 years OB. 9.42 years C. 6.36 years D. 5.79 years Proposal X $810,000 7 years $140,000 $57,000 Straight-line 17%