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

A. J

What is the next letter in the series: M, O, Q, S, ?

B. T

Find the odd one out in the series: A, C, E, G, I, K, M, O

D. O

Complete the series: a, c, e, g, ?

B. H

What is the next letter in the series: A, C, E, G, ?

B. H