In the pattern A1, B2, C3, ?, E5, what should replace the question mark?

A. D4

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 father of B, what is the relationship of C if A + C × B?

C. C IS THE SON OF A

If the input is 'z y x w v', what is the output after rearranging the letters in reverse alphabetical order?

B. Z Y X W V

If P * Q means P is the mother of Q, P + Q means P is the father of Q, and P - Q means P is the sister of Q, what is the relationship of R if P * R + Q?

A. R IS THE DAUGHTER OF Q

In a class of 30 students, John is ranked 12th from the top. What is his rank from the bottom?

B. 19TH