The police arrested four criminals – $P, Q, R$ and $S.$ The criminals knew each other. They made the following statements:
- $P$ says “Q committed the crime.”
- $Q$ says “S committed the crime.”
- $R$ says “ I did not do it.”
- $S$ says “What Q said about me is false”.
Assume only one of the arrested four committed the crime and only one of the statements made above is true. Who committed the crime?
- $P$
- $R$
- $S$
- $Q$