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The proposed mechanism for a reaction is
(1) A(g) + B(g) ⇌ X(g) [fast]
(2) X(g) + C(g) ⟶Y(g) [slow]
(3) Y(g) ⟶ D(g) [fast]
(d) Is the mechanism consistent with the actual rate law: Rate = k[A][B][C]?