If A + B means A is the brother of B, A - B means A is the sister of B, and A × B means A is the mother of B, what is the relationship of C if A + B × C?

B. C IS A'S DAUGHTER

If '?' represents multiplication and '?' represents division, what is the value of 12 ? 4 ? 3?

B. 36

A person walks at a speed of 5 km/h. How long will it take him to walk 15 km?

B. 2.5 HOURS

Given the input: 'red blue green yellow', what is the output after rearranging by color spectrum order?

A. RED GREEN BLUE YELLOW

In a coded relation, if P ÷ Q means P is the father of Q, P - Q means P is the daughter of Q, and P + Q means P is the son of Q, what is the relationship of R if P ÷ Q + R?

C. R IS Q'S SON