Three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which is the letter-cluster pair that does NOT belong to that group?

(Note: The odd one out is not based on the number of consonants/vowels or their positions in the letter-cluster.)

A.

EJ - OT

B.

PF - OI

C.

KP - UZ

D.

CH - MR

Solution:

-