Madison company is considering the purchase of $100,000 machine that is expected to result in a decrease of $25,000 per year in cash expenses after taxes. This machine will have no salvage value has an estimated useful life of 10 years and will be depreciated on a straight line basis. For this machine the multi year ROI will be:

select one:

a. 70%

b. 30%

c. 20%

d. 50%