Answer:
Alternative A will produce the best return.
It has a better present value index which means, the investment yield a better rate.
Step-by-step explanation:
ALTERNATIVE (a)
125,000 - 100,000 = 25,000 NPV
ALTERNATIVE (b)
300,000 - 262,500 = 37,500 NPV

ALTERNATIVE (a)
125.000/100,000 = 1.25
ALTERNATIVE (b)
300,000/262,500 = 1.1429