19. Assume the "perpetual inventory" method is used 1. Green Company purchased merchandise inventory that cost $64,000 under terms of 2/10, n/30 and FOB shipping point. 2. The company paid freight cost of $2,400 to have the merchandise delivered. 3. Payment was made to the supplier within 10 days. 4. All of the merchandise was sold to customers for $94,000 cash and delivered under terms FOB shipping point with freight cost amounting to $1,600. The gross margin from these transactions of Green Company is a. $31,280. b. $27,280. c. $28,880. d. $29,680