This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intravenous Anesthetic Agents, Subject name: Anaesthesia
All true about effect of propofol on Respiratory system except- 
Select and explain. 
A. Depresses respiratory centre, B. Depresses respiratory drive, C. Bronchodilator, D. Inhibits hypoxic pulmonary vasoconstriction
D: Inhibits hypoxic pulmonary vasoconstriction
Answer: D: Inhibits hypoxic pulmonary vasoconstriction 
Explanation: Propofol produces doses-dependent respiratory depression with apnea occurring in 25% to 35% patients after induction close. The ventilator response of co2 and apnea also reduces. They are potent bronchodilator. It preserves hypoxic pulmonary vasoconstriction. Blunts upper airway reflexes