Select the letter-cluster that can replace the question mark (?) in the following series.
BRH, ZUD, ? , VAV, TDR, RGN
(B +Â 24)(RÂ + 3)(H - 4) = ZUD
(Z + 24)(U + 3)(D - 4) = XXZ
(X + 24)(X + 3)(Z - 4) = VAV
(V + 24)(A + 3)(V - 4) = TDR
(T + 24)(D + 3)(R - 4) = RGN
$$\therefore$$ The correct answer is option D.
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