6) Ballard Company uses the perpetual inventory system. The company purchased $18,000 of merchandise from Andes Company under the terms 3/10, net/30. Ballard paid for the merchandise within 10 days and also paid $700 freight to obtain the goods under terms FOB shipping point. All of the merchandise purchased was sold for $30,000 cash. The amount of gross margin for this merchandise is: A. $17,460 B. $17,960 C. $18,000 D. $12,040