In following alphabet series , one term missing as shown by question mark . Choose missing term from options.

b, e, d, f, ?, h, j, ?, l

A. i, m
B. m, i
C. i, n
D. j, m
Answer: A . i, m


The series may be divided into groups as shown :
b  e  d  /  f  i  h  /  j  m  l
In each group, first letter is moved two steps forward to obtain the third letter
while the third letter is moved one step forward to obtain the second letter.