Where did this conversation most probably take pla

单项选择题

[听力原文]
W: Are these treatments really necessary They don’t seem to help much.
M: I’m afraid so, Mrs. Jones. Just be patient and I’m sure you’ll see some results soon.

Where did this conversation most probably take place（）

A．In a doctor’s office.
B．In a professor’s office.
C．In a lawyer’s office.
D．In a businessman’s office.