Given the task definition and input, reply with output. 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: Well, Bob, what a surprise! It's nice to see you again! M: Hello Ann! How long has it been? Wash't it a year ago Christmas, the last time we saw each other? W: You know, I think you're right. How's your wife? M: Oh, she's fine. W: Is she learning to play the piano? It seems to me I remember something about that. M: Oh, she's given that up. W: What's she doing these days? M: She's all excited about country music. She's going to a night school on Mondays and Thursdays, She's learning to play the guitar. But last year she learned to sing. I think she just enjoys going to school. Next say hello to Mrs. James for me, will you? W: How nice for her! Oh, I'm sorry. I must be off. But say hello to Mrs. James for me, will you? M: Sure, I will, and remember me to your husband, Good-bye!
When did Bob see Ann last time? (A) At a night school. (B) On Monday. (C) A year ago.