$B \overset{+4}{\to}\underset{+2}F\;{H}\overset{+4}{\to}{\underset{+2}L\;\underset{+2}N\;P} \overset{+4}{\to}{\underset{+2}T\;\underset{+2}V\;\underset{+2}X\;Z}$
The additions above refers to the position in the English alphabet set like $B + 4$ gives the fourth letter after $B$ which is $F.$
Correct answer: C.