24) For flood control purposes, the government is considering three undeveloped sites for a water detention area. The estimated costs associated with each alternative are given below. Use the conventional B-C ratio method, with AW as the equivalent-worth measure, to determine which alternative should be selected at an interest rate of 6% per year. Assume the site will be used for 17 years before being developed for other purposes. Initial cost, $ Annual maintenance, $/yr Annual benefits, $/yr Annual disbenefits, $/yr Site A $1,350,000 $320,000 $1,540,000 $530,000 Site B $1,250,000 $300,000 $1,500,000 $500,000 Site C $1,500,000 $345,000 $1,595,000 $560,000