A city is evaluating the installation of a garbage incinerator on the outskirts of town. The cost of the unit is $2 million. Environmental impact studies cost $25,000 to be paid prior to construction begins. Annual costs are estimated to include:

Plant operating expenses: $30,000. Environmental remediation expenses: $32,000.

As a benefit of the incinerator, a cost reduction of $12 per year is estimated to be on the bill of the company's 35,000 customers. The equipment is estimated to have a lifespan of 10 years, after which the incinerator will be dismantled at a cost of $45,000. Assuming the money is raised at 4% interest, how much is the profit ratio at cost of this project?

a. 1.625

b. 1.597

c. 1.634

d. 1.651

e. None of the above