accounting/economics help

Two investment opportunities are as follows:

At the end of 10 years, Alt. B is not replaced. And terminal value of Alt. A is 40. If the MARR is 10%, which alternative should be selected? What is the IRR of the selected alternative?

a) A, IRR(A)= 12.6%* Chegg answer is 11.46%

b) A, IRR(A)= 14.8%

c) B, IRR(A)= 13.8%

d) B, IRR(B)= 18.0%

A B First cost $150 100 Uniform annual benefit 25 22.25 End-of-useful-life salvage value 20 0 Useful life, in years 15 10