When a Reversible Chemical Reaction Is at Equilibrium

Multiple Choice

When a reversible chemical reaction is at equilibrium,

A) the rate of the reaction in one direction is equal to the rate in the reverse direction.
B) the concentration of the reactants is equal to the concentration of the products.
C) both the forward and reverse reactions stop occurring.
D) the supply of reactants has become exhausted,so the forward reaction ceases and the rate of the reverse reaction increases.
E) catalysts no longer influence either the forward or reverse reaction rates.