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.

DW

B.

HS

C.

MN

D.

GT

E.

KO

Correct answer is E

In all other groups, the first letter occupies the same position from A onward as the second letter occupies from Z backward e.g. D is the fourth letter from the beginning and W is the fourth letter from the end of the alphabet.