20 At the interest rate of 10% per year, an alternative with the following estimates has a modified B/C ratio that is closest ito Benefits of $60,000 per year Disbenefits of $29,000 per year Amortized first cost of $60,000 per year M&O costs of $15,000 per year ) (2 ) 0.43 0.12 None of the answers 0.27