Alphabet Series

Answer : D

Explanation :
There are two series BEH, DGJ, FIL and EJO, GLQ, INS. The first letter in
every group of the series comes after a
gap of one letter, i.e., B, D, F, and the
second and third letters of each group
have the same sequence, i.e., EGI and
HJL. Same is the case with the second
series.