Air Enters the Lungs at 15°C, and Reaches the Lungs

Air enters the lungs at 15°C, and reaches the lungs at body temperature (37°C) . Given that the tidal volume of the lungs is 0.5 L, what is the change in the energy of the air for each inhalation?

A) 11.6 J
B) 5.8 J
C) -5.8 J
D) -11.6 J