A business is considering two alternative investment proposals with the following data: Proposal A Proposal B Investment $800,000 $400,000 Useful life 6 years 8 years Estimated annual net cash inflows $175,000 $75,000 Residual value $40,000 $10,000 Depreciation method Straight-line Straight-line How long is the payback period for Proposal A? a. 7 years b. 6 years c. 6.5 years 2.4.57 years How long is the payback period for Proposal B? a. 5 years b. 5.33 years c. 6.5 years d.9.75 years d.3.68% What is the accounting rate of return for Proposal A? a.6.36% b.15% c.27.27% 0.6.73% What is the accounting rate of return for Proposal B ? a. 8.5% b.20% c.7.5%