Will mark brainliest in the diagram, the black line represents the concentration of a reactant and the green line represents the concentration of a product.

which statement best describes the reaction rate?

the reactants maintain an constant concentration in the first half of the reaction.

at the end of the reaction, both product and reactants are of an equal concentration.

the product maintains an constant concentration in the first half of the reaction.

at the end of the reaction, both product and reactants are of a constant concentration.