Mark: Hello, is that Jane?
Jane: Yes, speaking. Who's this?
Mark: It's Mark. I can't hear you very well. The connection is really bad.
Jane: Oh, I'm sorry. Let me try moving to another room. Can you hear me now?
What is the problem Mark is experiencing?
A) He dialed the wrong number.
B) He doesn't know who Jane is.
C) He has a bad phone connection.
D) He doesn't want to talk to Jane.