Find the missing term in the following series:
b, e, d, f, ?, h, j, ?, l
[A]i, m
[B]m, i
[C]i, n
[D]j, m

i, m
In the above question, the pattern is, the series may be divided into groups as shown :
b e d / f ? h / j ? I
In the first group, the second and third letters are respectively three and two steps ahead of the first letter. A similar pattern would follow in the second and third groups.