For a reversible reaction, what would a large equilibrium constant indicate?

A. at equilibrium, there will be no reactant left because they will all have been turned into products.

B. At equilibrium, the concentration of the reactant will be much higher than the concentration of the product.

C. At equilibrium, the concentration of the product will be much higher than the concentration of the reactant.

D. At equilibrium, the concentration of the product will be about the same as the concentration of the reactants.