Consider a Sample of Water in a Closed, Rigid Container

Multiple Choice

Consider a sample of water in a closed, rigid container. Which of the following will indicate that the given physical process has reached equilibrium?

A) The mass of the container remains constant.
B) The vapor pressure in the container remains constant.
C) The volume of water in the container increases from its original level.
D) All of these indicate that the reaction has reached equilibrium.