Identify the missing letter in the series: Z, X, V, T, ?

C. Q

What comes next in the series: M, N, O, P, ?

A. Q

Find the odd one out in the series: A, D, G, J, M, P, ?

B. R

Complete the series: B, D, F, H, ?

D. I

A is the brother of B. C is the sister of A. How is C related to B?

A. SISTER