Nitric Oxide Reacts with Bromine at Elevated Temperatures According to the Equation

Nitric oxide reacts with bromine at elevated temperatures according to the equation 2NO(g) + Br₂(g) $\rarr$ 2 NOBr(g) The experimental rate law is rate = k[NO][Br₂]. In a certain reaction mixture, the rate of formation of NOBr(g) was found to be 4.50 × 10^-4 mol L^-1 s^-1. Which unit below is the correct unit for the rate constant?

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