MHT CET Chemistry question

Compounds A and B react according to the following chemical equation,

Concentration of either A or B were changed keeping the concentrations of one of the reactants as constant and rates were measured as a function of initial concentration. Following results were obtained. Choose the correct option for the rate equations for this reaction.

Experiment | Initial concentration of [A]/mol L | Initial concentration of [B]/mol L | Initial rate of formation of [C]/mol L 1. | 0.30 | 0.30 | 0.10 2. | 0.30 | 0.60 | 0.40 3. | 0.60 | 0.30 | 0.20

• (A)Rate = k[A][B]
• (B)Rate = k[A][B]Correct
• (C)Rate = k[A][B]
• (D)Rate = k[A][B]