Read the following conversation and answer the question.

W: Excuse me, sir. I think you dropped this on the platform back there.

M: Oh, thank you so much! It would have been terrible if I had gotten on the subway without my wallet!

W: Don't mention it. Oh, there's my train! See you!

Question: Where does the conversation probably take place? 

- On a train.

- At a bus stop.

- At a subway station.


At a subway station.