Choose your answer from:
[1]. October 1st.
[2]. September 10th.
[3]. November 8th.
[4]. We don't know.
Q: Read the following article and answer the question. Article: Today is Linda's mother's birthday. It is also Teachers' Day. Linda's mother is a math teacher. So today is her birthday and also her festival. Linda and her brothers buy presents for their mother. Linda buys a good skirt for Mother. Her two brothers buy Mother a big birthday cake. Linda's father also has a present. He prepares a ring for his _ . Linda's mother is very happy. The family love her so much. It is a great birthday for her. Question: When is Linda's mother's birthday? Answer:
A:
[2].