$A \div B$ means $A$ is the father of $B$,$A - B$ means $A$ is the wife of $B$,$A \times B$ means $A$ is the brother of $B$,$A + B$ means $A$ is the daughter of $B$. If $P \times R - Q$,which of the following is true?

• A
  $P$ is brother-in-law of $Q$
• B
  $P$ is the brother of $Q$
• C
  $P$ is the uncle of $Q$
• D
  $P$ is the father of $Q$