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.

ABDG

B.

IJLO

C.

MNPS

D.

RSUY

E.

PQSV

Correct answer is D

In all other groups, the first, second and third letters are respectively moved one, two and three steps forward to give the second, third and fourth letters respectively.