Current location - Training Enrollment Network - Mathematics courses - In a math contest
In a math contest
From the analysis, it can be seen that if A is telling the truth, then B is telling the truth, so it is not established;

Assuming that B is telling the truth, then A is telling the truth, which is not true.

So it can only be that C is telling the truth and B is lying, that is, B won the prize;

So the answer is: B.