Definition: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Input: An intro is shown that says "mcgill music com sax school". There is a man playing a saxophone, and then he talks for awhile. he <sep> (A) demonstrates a few notes and how you can change the pitch. (B) starts to slow down, then starts to add more numbers and then he starts to put purple numbers on the keyboard. (C) continues to play the saxophone, switching to the end and right to his brother. (D) starts talking animatedly about the microphone and the mics, then he just stands up and pulls the saxophone out of his mouth.
Output:
A