What is the order and molecularity of the reaction {NH}₃ → {N}₂ + 3text{H}₂ , given that the rate is equal to k ?

a) Order = 1, Molecularity = 1

b) Order = 2, Molecularity = 2

c) Order = 1, Molecularity = 2

d) Order = 2, Molecularity = 1