At a certain time in a reaction, substance A is disappearing at a rate of 4.0 * 10-2 M>s, substance B is appearing at a rate of 2.0 * 10-2 M>s, and substance C is appearing at a rate of 6.0 * 10-2 M>s. Which of the following could be the stoichiometry for the reaction being studied? (a) 2 A + B ¡ 3 C (b) A ¡ 2 B + 3 C (c) 2 A ¡ B + 3 C (d) 4 A ¡ 2 B + 3 C (e) A + 2 B ¡ 3 C

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