if there is more than one acceptable answer please select & explain why! Thank you!

Consider the following hypothetical reaction and the established rate law. A + B X Rate = k [A] [B] Select which is/are acceptable mechanism(s). Justify your answer. I. A+A=A(fast); Az + B A+ X (slow) II. AC (fast); C+B X (slow) III. C + B =X+ A (fast), A+A C (slow) IV. C +A=X (fast); BC (slow) V. 2A + B X (slow); XC + A (fast)