A liquid placed in a closed container will evaporate until equilibrium is reached. At equilibrium, which of the following statements is false?

A. The partial pressure exerted by the vapor molecules is called the vapor pressure of the liquid.

B. Liquid molecules are still evaporating.

C. The number of vapor molecules remains essentially constant.

D. The partial pressure of the vapor is constant.

E. The boundary (meniscus) between liquid and vapor disappears.