Which Statement Best Outlines the Reason Hyperventilation Can Result in Loss

Which statement best outlines the reason hyperventilation can result in loss of consciousness?

A) Hyperventilation eliminates too little CO₂, causes an increase in blood H₂CO₃ and consequently in blood H+, and thereby may produce acidosis.
B) Increases in oxygen ion concentration above a certain level depress the central nervous system and, therefore, produce such symptoms as disorientation and coma.
C) Decreases in hydrogen ion concentration above a certain level depress the central nervous system and, therefore, produce such symptoms as disorientation and coma.
D) Increases in hydrogen ion concentration above a certain level depress the central nervous system and, therefore, produce such symptoms as disorientation and coma.