This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrine System, Subject name: Physiology
Which of the following decreases in a flight and fright situation? 
Select and explain. 
A. Pupillary diameter, B. Blood pressure, C. Blood glucose, D. Airway resistance
D: Airway resistance
Answer: D: Airway resistance 
Explanation: Airway resistance : Decreases Blood glucose : Increases Blood pressure : Increases Pupillary diameter : Increases (mydriasis)