Speaker A: Excuse me, Professor Smith, can you spa

单项选择题

Speaker A: Excuse me, Professor Smith, can you spare me a few minutes There’ s something I’d like to speak to you about. I won’ t keep you long.
Speaker B:（）

A. Of course not. Haven’ t you seen have been pretty busy now
B. Well, I’m afraid we have to find some other time. I’ m fully occupied now.
C. No. I’ll have an important meeting to attend this evening.
D. Not possible, as I don’t know how long you will keep m