Builtrite is considering the purchase of a machine with the following cash flow diagram: year 0 spend $40,000 year 1 $15,000 year 2 $20,000 year 3 $20,000 year 4 $25,000 What is the payback period? Group of answer choices

A. 3.25 years

B. 3.0 years

C. 2.75 years

D. 2.25 years