Which Description for Mammals Breathing in Hot Environments, Is the Most

Which description for mammals breathing in hot environments, is the most accurate?

A) The walls of the nasal passage are warmed by the process of inhalation. Cold exhaled air gets warmed as it passes by these warmed surfaces.
B) The walls of the nasal passage are warmed by the process of inhalation. Warm exhaled air gets warmed as it passes by these warmed surfaces.
C) The walls of the nasal passage are cooled by the process of inhalation. Cold exhaled air gets cooled as it passes by these cooled surfaces.
D) The walls of the nasal passage are cooled by the process of inhalation. Warm exhaled air gets cooled as it passes by these cooled surfaces.