정답이 뭔가요?

M: Hello, this is Ron Vincent from Spotless Cleaners. I'm calling to discuss changing the time that we visit your office to clean.
W: Mr. Gupta handles that, but he's gone for the day. I can give him a message, though.
M: Good. Please tell him we'd like to visit your building on Monday and Wednesday mornings.

What is the purpose of the call?
(A) To request time off
(B) To promote a service
(C) To change a schedule
(D) To negotiate a pay raise

✔️✔️✔️최고의 답변✔️✔️✔️