Ozone Reacts with Nitrogen Dioxide to Produce Oxygen and Dinitrogen

Ozone reacts with nitrogen dioxide to produce oxygen and dinitrogen pentoxide according to the following chemical equation:
O₃(g) + 2NO₂(g) → O₂(g) + N₂O₅(g)
The rate law for this reaction is Rate = k[O₃][NO₂].If concentration is measured in moles per liter and time is measured in seconds,what are the units of k?

A) L ∙ mol^-1 ∙ s
B) L² ∙ mol^-2 ∙ s^-1
C) L ∙ mol^-1 ∙ s^-1
D) mol ∙ L^-1 ∙ s^-1
E) mol² ∙ L^-2 ∙ s^-1