Q: In this task, you will be shown a conversation. You need to write a question with three choices for the conversation. Your question should be answerable based on the conversation and only have one correct answer. Note that you don't need to answer your question. "W" and "M" in the conversations stand for "woman" and "man".
W: Hello,this is Susan speaking. Is Mr. Brown in, please? M: Yes, speaking. W: Hi,Mr. Brown. Your son Ted missed the school trip this morning. Do you know why? M: Yes. He got up a bit late this morning. He missed the school bus. W: Why did he get up late? Didn't he have a clock? M: The clock didn't work this morning. I worked overtime till midnight at home last night, so I got up late,too. It was already nine o'clock when I woke him up. W: Well,why did he wake up at such a late hour? Did he go to bed late last night? M: Yes. He didn't go to bed until 11:00 pm. W: Why didn't you ask him to go to bed early? M: He's a "night owl". He can't fall asleep before 11:00 pm. W: You should really change his sleeping habits. Otherwise it will happen again. M: I will. Thank you for calling, Susan.
A:
Why did Ted miss the bus this morning? (A) He worked overtime. (B) He didn't have a clock. (C) He got up too late.