Concept:Cost of goods sold is calculated as opening stock plus purchases plus carriage inwards minus closing stock.Explanation:Use the formula:Cost of goods sold=Opening stock+Purchases+Carriage inwards−Closing stockSubstitute the given values:3,296+8,960+84−4,936First add opening stock and purchases:3,296+8,960=12,256Add carriage inwards:12,256+84=12,340Subtract closing stock:12,340−4,936=7,404Therefore, the cost of goods sold is ₦7,404.Answer:B. 7,404