The Following Reaction Is a Reversible Reaction

The following reaction is a reversible reaction.Which statement BEST describes what it means for this reaction to be reversible? HCOOH + H₂O ⇌ HCOO^- + H₃O⁺

A) This reaction only occurs in the reverse direction as written above.
B) All of the reactant molecules react to make product and then all of the product molecules react to make reactants again.
C) Forward and reverse reactions proceed at the same rate.
D) Forward and reverse reactions occur simultaneously.
E) The rate of the reverse reaction is must faster than the rate of the forward reaction.