单项选择题

M: Hello. This is Tom Davis. I have an appointment with Mrs. Jones for nine o’clock this morning, but I’m afraid I’ll have to be about fifteen minutes late.
W: That’s alright, Mr. Davis. She doesn’t have another appointment until ten o’clock.

When will Mr. Davis most probably meet with Mrs. Jones()

A. At 10:00.
B. At9:00.
C. At 9:15.
D. At 9:30.