The hypothetical reaction

A + B + C → D + E

has the rate law Rate = k[A]₂[B]. Which of the following changes would have the least effect on increasing the rate of this reaction?

a. Doubling [A]₀ while keeping [B]₀ and [C]₀ constant.

b. Doubling [B]₀ while keeping [A]₀ and [C]₀ constant.

c. Doubling [C]₀ while keeping [A]₀ and [B]₀ constant.

d. Increasing the rate constant by running the reaction at a higher temperature.

e. Adding a catalyst to the reaction mixture.