Which of the Following Is a True Statement About the Delivery

Which of the following is a true statement about the delivery of warm,humidified gas to the lungs?

A) The gas delivered to the nose or mouth contains 95% relative humidity and has an absolute humidity of 28 mg/L to 34 mg/L at 29° C to 32° C.
B) The gas delivered to the hypopharynx contains 50% relative humidity and has an absolute humidity level of 10 mg/L at 22° C.
C) The gas delivered to the midtrachea contains 50% relative humidity and has an absolute humidity level of 36 mg/L to 40 mg/L at 31° C to 35° C.
D) The gas delivered to the midtrachea contains 100% relative humidity and has an absolute humidity level of 36 mg/L to 40 mg/L at 31° C to 35° C.