The girl is talking to a man with a ponytail. She is my friend

A. The girl who is talking to a man with a ponytail is my friend.

B. The girl, whom a man with a ponytail is talking to, is my friend.

C. My friend is the girl, who is talking to a man with a ponytail.

D. The girl, who is talking to a man with a ponytail, is my friend.