‘F $$+$$ R’ means ‘F is the mother of R’
‘F $$-$$ R’ means ‘F is the father of R’
‘F $$\div$$ R’ means ‘F is the husband of R’
‘F $$\times$$ R’ means ‘F is the daughter of R’
If ‘$$A \div C \times B + Q - Z$$’, how is Q related to A?

A

Sister

B

Wife’s brother

C

Father

D

Father’s Father