This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuromuscular Blocker, Subject name: Anaesthesia
[{'content': '85 yr old man with carcinoma bronchus is given general anesthesia for an emergency laparotomy, post operatively neuromuscular monitoring shows delayed recovery; most probable cause is \nSelect and explain. \nA. Intracerebral bleed, B. Myasthenic syndrome, C. Ventilation perfusion mismatch, D. Blood loss', 'role': 'user'}, {'content': 'Answer: B \nExplanation: There is association of myasthenic syndrome with carcinoma bronchus . Delayed recovery is seen with neuromuscular blocker in myasthenic syndrome.', 'role': 'assistant'}]