Choose the sentence which contains a relative pronoun.

A. Please, put your gym bag in your locker.
B. Those are not my books.
C. Someone is coming down the road.
D. Ms. Jones, whom you have met, is my teacher.

I believe it's D, but would like to confirm with the wonderful community.

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.