题目内容
（请给出正确答案）
[主观题]
The most effective complaint can be made by______.A．asking politely to change the itemB．sa
The most effective complaint can be made by______.
A．asking politely to change the item
B．saying firmly that the item is of poor quality
C．explaining exactly what is wrong with the item
D．showing the faulty item to the manufacturer
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