Explanation : Plug in the relevant cash flows into the financial calculator for both the projects
and compute the NPVs.
Project A: CF0 = -3518, CF1 = 2500, CF2 = 1450, CF3 = 500, I = 10%,
CPT NPV NPVA = $328.73
Project B: CF0 = -3846, CF1 = 900, CF2 = 1500, CF3 = 2500,
I = 10%, CPT NPV NPVB = $90.14
Since both projects are mutually exclusive i.e. the firm can only accept one, it
would choose the one with the higher NPV which is A.