06年12月六级听力 11题中 这个不太明白里面对话的意思

06年12月六级听力 11题中 这个不太明白里面对话的意思
W:I need to find a dentist; you said you know Dr.Smith well,do you recommend
her?
M:Well,I had to see her a few times,but what impressed me most were the magazines in her waiting room.Q:What does the woman imply?
为什么答案是选D 而不是选A或者B
11.A) Dr.Smith’s waiting room isn’t tidy.
B) Dr.Smith enjoys reading magazines.
C) Dr.Smith has left a good impression onher.
D) Dr.Smith may not be a good choice.