Please show all calculations and the formulas that are used

6.11 Consider the following two mutually exclusive projects B1 B2 Salvage Value Cash Flow Salvage Value as Flow $18,000 2,000 2,000 2,000 -2,000 -2,000 0 6,000 4,000 3,000 2,000 2,000 $15,000 2,100 2,100 2,100 6,000 3,000 1,000 Salvage values represent the net proceeds (after tax) from disposal of the assets if they are sold at the end of each year. Both B1 and B2 will be available (or can be repeated) with the same costs and salvage values for an indefinite period (a) Assuming an infinite planning horizon, which project is a better choice at MARR-12%? (b) With a 10-year planning horizon, which project is a better choice at MARR-12%? (Note: In the 4th cycle for B2, the project terminates at the end of its first year, i.e. year 10)