The Gas Phase Reaction of Nitrogen Dioxide and Carbon Monoxide $\circ$

The gas phase reaction of nitrogen dioxide and carbon monoxide was found experimentally to be second-order with respect to NO₂, and zero-order with respect to CO below 25 ^$\circ$ C.
NO₂ + CO $\rarr$ NO + CO₂
Which one of the following mechanisms is consistent with the observed reaction order

A) NO₂ + 2CO $\rarr$ N + 2CO₂ fast
N + NO₂ $\rarr$ 2NO slow
B) NO₂ + 2CO $\rarr$ N + 2CO₂ slow
N + NO₂ $\rarr$ 2NO fast
C) NO₂ + NO₂ $\rarr$ NO₃ + NO fast
NO₃ + CO $\rarr$ NO₂ + CO₂ slow
D) NO₂ + NO₂ $\rarr$ NO₃ + NO slow
$NO_3 + CO \rarr NO_2 + CO_2$ fast