听力是tpo10 第一篇conversation 第五题，我觉得是A，但是答案是C，麻烦您给解释一下。
I am hoping you were done to get been too pushy. If you prefer, you can return the book and arrange for store credit, you don't qualified for refund. Policy is policy after all, but you can make it exchange and you can use the credit for your books for the next semester. The credit carries over for one semester to the next.
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