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

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

Lets check each options

(A) ROM

 R - 3 = O

O - 2 = M

(B) YVT

Y - 3 = V

 V - 2 = T

(C) GDB

G - 3 = D

D - 2 = B

(D) LHF

L - 3 = I ≠ H

H - 2 = F

Odd one out: (D) LHF (does not follow the –3, then –2 pattern)