Which Correctly Describes the Cause of the Increase in Alveolar

Multiple Choice

Which correctly describes the cause of the increase in alveolar ventilation that occurs when a person ascends to high altitude?

A) The decrease in PCO₂ of inspired air decreases alveolar PCO₂,stimulating the peripheral chemoreceptors.
B) The decrease in PCO₂ of inspired air decreases alveolar PCO₂,stimulating the central chemoreceptors.
C) The decrease in PO₂ of inspired air decreases alveolar and arterial PO₂,stimulating the peripheral chemoreceptors.
D) The decrease in total atmospheric pressure causes a greater negative pressure in the intrapleural space,resulting in deeper and more frequent breathing. 
E) The decrease in the total barometric pressure at high altitude causes hypocapnea,which stimulates peripheral chemoreceptors.