In a certain code language,
‘A + B’ means ‘A is the brother of B’,
‘A - B’ means ‘A is the mother of B’,
‘A $$\times$$ B’ means ‘A is the father of B’ and
‘A $$\div$$ B’ means ‘A is the son of B’.
If $$P \times Q \times R + D \div S - B$$, then which of the following statements is NOT correct?

A

Q is B’s father.

B

P is B’s mother’s father.

C

R is B’s brother.

D

R is P’s son’s son.