This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
Which one of the common side effects is seen with fentanyl ? 
Select and explain. 
A. Chest wall rigidly, B. Tachycardia, C. Pain in abdomen, D. Hypertension
A: Chest wall rigidly
Answer: A: Chest wall rigidly 
Explanation: None