单选题 Nowadays advertising costs are no longer in reasonable ______ to the total cost of products.
【正确答案】 B
【答案解析】[解析] in connection with：与……有关、相关；in proportion to：与……相称、成比例；in relation to：关于，涉及；in correspondence with表示“与……一致，与……保持联系”。故选B。