In a certain code language,
A + B means 'A is the father of B',
A - B means 'A is the brother of B',
A x B means 'A is the wife of B' and
A ÷ B means 'A is the mother of B'.
Based on the above, if 'A x Q + R – S÷ B', then what is the relationship of A to B?

Given: A × Q + R – S÷ B

So, A is Mother’s mother of B.

Thus, the correct answer is (b).