15. An equipment with a cost of P 100 000 is expected to generate returns of P
90 000; P 60 000 and P 50 000 for the first, second and third year, respectively.
Using a discount rate of 12%, what is the NPV of the project?
a. P 60 121
c. P 83 431
b. P 79 341
d. P 63 778​