64. Since advertisement expenses form part of the cost of production,which is covered by theselling price,obviously it is the customers who pay for the advertisement finally.
A)自从广告成为一部分生产成本,它就需要被销售价格覆盖,显然消费者最终要为广告支付费用。
B)自从广告费用成为一部分生产成本之后,它就需要被销售价格覆盖,显然消费者最终要为广告支付费用。
C)因为广告费用是生产成本的组成部分,包含在售价之中,所以显然最终为广告付钱的还是消费者。