Select the letter-cluster that can replace the question mark (?) in the following series.
KQG, JTK, HXO, ECS, ?
The series follow pattern as,
(K - 1)(Q + 3)(G + 4) = JTK,
(J - 2)(T + 4)(K + 4) =Â HXO
(H - 3)(X +Â 5)(O +Â 4) = ECS
(E - 4)(C + 6)(S + 4) = AIW
$$\therefore$$ The correct answer is option B.
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