If 'P + Q' means 'P is father of Q', and 'P ÷ Q' means 'P is mother of Q', then what is the meaning of the expression 'A + B ÷ C'?

Let's decode the given expression 'A + B ÷ C' step-by-step:
A + B means A is the father of B. (A is Male, one generation above B)

B ÷ C means B is the mother of C. (B is Female, one generation above C)

Now let's reconstruct the relationships:

A is the father of B.

B is the mother of C.

This means A is the father of C's mother. Therefore, A is the maternal grandfather of C.

Let's check the given options:

Option A: B is brother of C (Incorrect, B is mother of C).

Option B: B is son of A (Incorrect, B is female, so B is daughter of A).

Option C: A is maternal grandfather of C (Correct).

Option D: A is father of C (Incorrect, A is grandfather).