问题

________ by the problem that was put forward at the meeting, the people in the audience had________ looks on their faces [ ]
A: Puzzled;puzzling
B: Puzzled;puzzled
C: Puzzling;puzzling
D: Puzzling;puzzled
B: Puzzled;puzzled
C: Puzzling;puzzling
D: Puzzling;puzzled
正确答案是: