Pick out the correct statement.

A. A substance existing above its critical temperature is called a saturated vapor

B. A mixture of vapor gas is called saturated, if the equilibrium vapor pressure of the liquid is more than the partial pressure of the vapor at the same temperature

C. Heat added to or given up by a substance at constant temperature is called the sensible heat

D. The end points of a vapor-pressure vs. temperature curve are critical and triple points

Answer: Option D