A、In a factory. B、In a clinic. C、In a park. D、In a theater. B男士询问医生如何服用这种药，女士回答在饭后服用，一日三次。由此可见，对话可能发生在诊所或医院。

W: Well, we have waited for Mary for 45 minutes.
M: Take it easy. Just stay another ten minutes.
Q: How long will they wait for Mary in total?

M: Doctor, I’m wondering how to take the medicine.
W: Three times a day after meals.
Q: Where does this dialogue probably take place?