What comes next in the series: Z, Y, X, W, ?

A. V

In a series where each letter is the previous letter plus 4, what is the 5th letter if the series starts with 'A'?

A. E

If the sequence is A, C, E, G, what is the next letter?

B. H

Identify the pattern: 1, 1, 2, 3, 5, 8, ?

D. 13

In the sequence B, D, F, H, what is the next letter?

A. J