Answer:
B. the rate of the forward reaction equals the rate of the reverse reaction.
Explanation:
Equilibrium -
In a chemical reaction , a point or stage is reached , where the rate of forward reaction , becomes equal to the rate of reverse reaction , is referred to as the stage of equilibrium .
In this very stage the concentration on the reactant as well as product side remains constant .
Hence , from the given information of the question ,
The correct option is b.