The Experimental Rate Law for the Decomposition of Nitrous Oxide $\to$

Multiple Choice

The experimental rate law for the decomposition of nitrous oxide (N₂O) to N₂ and O₂ is Rate = k[N₂O]².Two mechanisms are proposed:
I.N₂O $\to$ N₂ + O
N₂O + O $\to$ N₂ + O₂
II.2N₂O N₄O₂
N₄O₂ $\to$ 2N₂ + O₂
Which of the following could be a correct mechanism?

A) Mechanism I,with the first step as the rate-determining step.
B) Mechanism I,with the second step as the rate-determining step as long as the first step is a fast equilibrium step.
C) Mechanism II,with the second step as the rate-determining step if the first step is a fast equilibrium step.
D) None of the choices (A-C) could be correct.
E) At least two of the above choices (A-C) could be correct.