Boiling a Liquid Means

Multiple Choice

Boiling a liquid means

A) the vapor pressure of the liquid equals the pressure exerted by its vapor phase.
B) a dynamic equilibrium exists between the liquid and vapor phase.
C) the vapor pressure of the liquid equals the external pressure above the liquid surface.
D) the molecular bonds in the liquid are broken rapidly.
E) the vapor pressure of the liquid is less than the external pressure above the liquid surface.