In the following question, some groups of letters are given, all of which, except one, share a common similarity. Choose the odd one out.

Choose the odd one out.

A.

XZCG

B.

OQTX

C.

IMNQ

D.

EGJN

Correct answer is C

In all other groups, there is a gap of one letter between first and second letters, two letters between second and third and three letters between third and fourth.