Given the Following Proposed Mechanism, Predict the Rate Law for the Overall

Given the following proposed mechanism, predict the rate law for the overall reaction. A₂ + 2B → 2AB (overall reaction)
Mechanism
A₂ ⇌ 2A fast
A + B → AB slow

A) Rate = k[A][B]
B) Rate = k[A₂][B]
C) Rate = k[A₂][B]^1/2
D) Rate = k[A₂]
E) Rate = k[A₂]^1/2[B]