A series is given, with one term missing.
Choose the correct alternative from the given ones that will complete the series.
DE, GH, JK, MN, ?

Correct option is D

The given series is as follows:
For the first letters:
D→G→J→M→P(+3 each step)
For the second letters:
E→H→K→N→Q(+3 each step)
Hence, ? = PQ