The Reaction 2A + B → C

The reaction
2A + B → C
Has the following proposed mechanism.Step 1: A + B
D (fast equilibrium)
Step 2: D + B → E
Step 3: E + A → C + B
If step 2 is the rate-determining step, what should be the rate of formation of C?

A) k[A]²[B]
B) k[A]²[B]²
C) k[A]
D) k[A][B]
E) k[A][B]²