单选题 Tom cannot tell the difference between Coke and Pepsi. For Tom, these goods are ______.
【正确答案】 A
【答案解析】[解析] 可口可乐和百事可乐是相互替代满足消费者需求的,因而二者是替代品。A完全替代品,B完全互补品,C必需品。