Read the following article and answer the question. Article: I'm Ann. I am twelve. My birthday is on May 11th. I am a student. I am in No. 3 middle School. I have a good friend. Her name is Alice. She is twelve, too. We are not in the same class. We have the same English teacher. Her name is Monica. We all like her. Kate is Alice's sister. Oh, today is November 11th. It's Kate's birthday. I will buy her a birthday card. Question: When is Ann's birthday? _ . Answer:
May 11th