34. in the enzyme reaction above, catechol is the substrate, oxygen is a reactant, catechol oxidase is the enzyme, benzoquinone is the product, and water (h2o) is a by-product. which of the following will decrease the rate of this reaction?

a. reducing the amount of oxygen
b. reducing the amount of catechol
c. increasing the amount of catechol oxidase
d. increasing the amount of benzoquinone

i believe it's b but i'm really not sure. any would be really appreciated!