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".

M: Let's try that song again. You played it well, but try to play the second part a little faster this time. W: Ugh. I already played it three times! My hands are too cold to play well. M: OK, let's try another song. Play the short, slow piece that you like so much, the one that sounds like guitar music. That should warm up your hands! W: Oh, that one is easy! I played it four times this morning. It's my favorite. M: Good! You will be a great piano player one day if you keep playing the songs that you enjoy!

What instrument is the woman playing? (A) The guitar. (B) The violin. (C) The piano.