A project will realize a benefit of $1 million in 2 years, with a prevailing interest rate of 10 percent. We must invest $0.41 million today to perform the work. The benefit/cost ratio is roughly...

a. 2:1

b. 4:1

c. 3.5:1

d. 1.5:1

According the moke test I used, the right answer is A. I used the PV=FV/(1+R)^N formula and the BCR=(B-C)/C formula, but no result match with the right answer. I would much appreciate that someone explain me how to get 2:1

Thanks!