15. Anderson's Used Cars uses the specific identification formula of costing inventory. During March, Anderson purchased three cars: a Honda Civic for $6,200, a Chevy Malibu for $7,300, and a Ford Pinto $8,400, respectively. During March, two cars are sold for $8,600 each. Anderson determines that at March 31, the Ford Pinto is still on hand. What is Anderson's cost of goods sold for March? (a) $8,400 (b) $13,500 (c) $15,700 (d) $17,200