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.

MKGA

B.

PNID

C.

RPLF

D.

VTPJ

Correct answer is B

In all other groups, the first, second and third letters are respectively two, four and six steps ahead of the second, third and fourth letters respectively.