The reaction,A+2B→C+2D,is run three times. In the second run, the initial concentration of A is double that in the first run,and the initial rate of the reaction is double that of the first run. In the third run, the initial concentration of each reactant is double the respective concentrations in the first run,and the initial rate is double that of the first run. What is the order of the reaction with respect to each reactant?