For the reaction 2A + B → Products, when the concentrations of A and B both were doubled, the rate of the reaction increased from 0.3 mol L-1 S-1 to 2.4 mol L-1 S-1. When the concentration of A alone is doubled, the rate increased from 0.3 mol L-1 S-1 to 0.6 mol L-1 S-1.Which one of the following statements is correct?

• A. Total order of the reaction is 4
• B. Order of the reaction with respect to B is 2
• C. Order of the reaction with respect to B is 1
• D. Order of the reaction with respect to A is 2