please help me and show me the steps!

Custom Costruction Comment achet will for the town Year cc 1 140 51200 2 10.00 a 13440 531.500 11.200 100 12.00 41 40 TICH They la) Compute each project's payback period (Round anwers to 2 dechtel placeres 15:25) AA years be Von Which is the most desirable project! The most desirable project and on a periods The AA pun CC Which is the most desirable project hased on vale? the most desirable project bined on represent Which is the last desirable projecten var? The last desirable project based on reis Which is the least desirable project? The least desirable project based on payback period is Project AA (b) Compute the net present value of each project. (Enter negative amounts using either a negative sign preceding the number es.-45 or parentheses es: (45). Round final answers to the nearest whole coltar, es 5,275. For calculation purposes, use 5 decimal places as displayed in the factor table provided.) AA BB CC Which is the most desirable project based on net present value? The most desirable project based on net present value is Project CC Which is the least desirable project based on net present value? The least desirable project based on net present value is Project AA