1 Answers

Option 3 : HFDB

V - (2) → T; T - (1) → S; S - (2) → Q

M - (2) → K; K - (1) → J; J - (2) → H

H - (2) → F; F - (2) → D; D - (2) → B

X - (2) → V; V - (1) → U; U - (2) → S

K - (2) → I; I - (1) → H; H - (2) → F

Thus, HFDB does not belong to the group.

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