Jewelry theft. What is the correct answer?

According to the question, the four confessions are as follows:

Answer: EPDM.

B: C.

C: B.

D: C。

It can be seen that it is not A, it is not D, and the criminal is between B and C. If C is a criminal, then A, B and D are all telling the truth, which does not meet the meaning of the question. If B is, then A and C are telling the truth and B and D are lying. So the criminal is B, B and D all lied.

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