Which of the Following Is True About the Physiologic Control

Which of the following is true about the physiologic control of heat and moisture exchange by the body?

A) The nose, oropharynx, and hypopharynx add heat and humidity during exhalation.
B) The nose, oropharynx, and hypopharynx cool gas and reclaim water during inhalation.
C) The inability of the nasal mucosa to reabsorb excessive amounts of exhaled condensation in cold weather causes a "runny nose."
D) The mouth is more efficient at reclaiming heat and water during exhalation than is the nose.