An experiment is performed on the branching reaction depicted in the text. Two things are determined: (1) The yield for B at a given temperature is found to be 0.3, and (2) the rate constants are described well by an Arrhenius expression with the activation to B and C formation being 27 and 34 kJ mol–1, respectively, and with identical preexponential factors. Demonstrate that these two statements are inconsistent with each other.