[单项选择]

W: The company is going to recruit some people.
M: Really Are there any vacant positions
W: Yes. The position of senior secretary had fallen vacant.
M: What happened to Kitty She was an excellent senior secretary.
W: She has just got married. And she wants to be a full-time housewife. So she left.
Mi What a pity! Do you have any idea who will be the new senior secretary
W: Not yet. The company has advertised the position.
M: What qualifications are needed
W: A female graduate from the secretary college with a good knowledge of English.
M: A graduate does not always make an qualified employee.

Why did Kitty leave the company （　）
A. Because she was not good at her job.
B. Because she got married and she wanted to be a full-time housewife.
C. Because she didn’t like her job.