Consider the following reaction: 2 A + B------>X + 2 Y. Youare told that the first step in the mechanism of this reactionhas the following rate law: Rate = k[A][B]. Which of thefollowing could be the first step in the reaction mechanism(note that substance Z is an intermediate)? (a) A + A---->Y + Z(b) A----->X + Z(c) A + A + B---->X + Y + Y(d) B----->X + Y(e) A + B----->X + Z

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