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

A. J

If the pattern is 5, 10, 20, 40, what is the next number?

C. 80

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

A. V

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

B. H

Identify the pattern: 5, 10, 20, 40, ?

D. 80