Problem description:
Once, a jewelry store in the capital of a country was robbed of a diamond worth 5000 dollars by thieves. After several months of investigation,
It must be one of A, B, C and D to find out who committed the crime. So these four people were arrested as the main suspects.
Go to prison for trial. But there are some contradictions in the confessions of four people-
A said: I didn't commit a crime.
B said: D is a criminal.
C said: B is the criminal who stole this diamond.
D said: B set me up on purpose.
Assuming that only one of the four people tells the truth, who is the real criminal?
Analysis:
C