What is the equilibrium-constant expression for the reaction 2Hg(l) + O2(g) ⇌ 2HgO(s)?

Which one of the following statements does not describe the equilibrium state?

a. While at equilibrium, a dynamic process is still occurring.  

b. The concentration of the reactants is equal to the concentration of the products.

c. The concentration of the reactants and products reach a constant level.

d. At equilibrium, the net concentration of all species is not changing.

e. All are true.

State which is greater in amount:reactants or products, based on the given equilibrium constant, K.