Why does the healthcare provider prescribe a ventilator setting to maintain partial pressure of arterial carbon dioxide (PaCO2) between 35 and 38 mmHg for a patient with traumatic brain injury?

Lower levels of arterial carbon dioxide facilitate brain oxygenation.

Carbon dioxide is a waste product that must be eliminated from the body.

Carbon dioxide is a vasodilator that can cause increased intracranial pressure.

Lower levels of arterial carbon dioxide (PaCO2) are essential for gas exchange.