【单选题】

Woman: I can’t believe Karen is late for such an important occasion as a job interview. I reminded her time and again yesterday.

Man: You should have known her better by now.Everything you tell her goes in one ear and out the other.
Question: What does the man imply
A、Karen is very forgetful.
B、He knows Karen better now.
C、Karen is sure to pass the interview.
D、The woman should have reminded Karen earlier.