根据以下资料，回答下列各题。
When I was about 12 1 had an enemy, a girl who liked to point out my shortcomings．Week by week her list grew: I was skinny, I wasnt a good student, I was boyish, I talked too loud, and so on．I put up with her as long as I could．At last, with great anger, I ran to my father in tears．
He listened to my outburst quietly．Then he asked, "Are the things she says true or not？"
True？ I wanted to know how to strike back．What did truth have to do with it？
"Mary, didnt you ever wonder what you are really like？ Well, you now have that girls opinion．Go and make a list of everything she said and mark the points that are true．Pay no attention to the other things she said．"
I did as he directed and discovered to my surprise that about half the things were true．Some of them I couldnt change (like being skinny), but a good number I could and suddenly wanted to change．
For the first time in my life I got a fairly clear picture of myself．
I brought the list back to Daddy．He refused to take it．
"Thats just for you," he said．"You know better than anybody else the truth about yourself, once you hear it．But youve got to learn to listen, not to clos your ears in anger or hurt．When something said about you is true youll know it．Youll find that it will echo inside you．"
Daddys advice has returned to me at many important moments．
What did the girls enemy like to do？

A. Talking with her．
B. Pointing out her weak points．
C. Reporting to the teacher．
D. Quarrelling with her．