—You have found your lost umbrella haven’t you?—Yes. I it behind the door this afternoon

问题补充：

—You have found your lost umbrella, haven’t you?

—Yes. I it behind the door this afternoon.

A. have found B. will find C. found

答案：

解析：考查动词的时态。根据答语的句意：今天下午找到的。可知动作发生在过去，用一般过去时，故选C。