V. S. Yogurt is considering two possible expansion plans. Proposal A involves opening 10 stores in northern California at a total cost of $3,150,000. Under another strategy, Proposal B, V. S. Yogurt would focus on southern California and open six stores for a total cost of $2,500,000. Selected data regarding the two proposals have been assembled by the controller of V. S. Yogurt as follows. All revenue and expense estimates other than depreciation will be received or paid in cash. Required investment Estimated life of store locations Estimated salvage value Estimated annual net cash flow Depreciation on equipment (straight-line basis) Estimated annual net income Proposal A $3,150,000 7 years $ -0- 750,000 450,000 ? Proposal B $2,500,000 7 years $ 400,000 570,000 300,000 ? Instructions a. For each proposal, compute the (1) payback period, (2) return on average investment, and (3) net present value, discounted at management's required rate of return of 15 percent. (Round the payback period to the nearest tenth of a year and the return on investment to the nearest tenth of a percent.) Use Exhibits 263 and 26-4@ where necessary. b. On the basis of your analysis in part a, state which proposal you would recommend and explain the reasoning behind your choice