This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Airway, Subject name: Anaesthesia
[{'content': 'What is the use of murphys eye present on the tip of endotracheal tube \nSelect and explain. \nA. Alternate path for ventilation if the proximal po gets blocked, B. Opening for suctioning, C. Continuous suctioning po, D. To make the tube light', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Murphys eye is provided to serve as alternate pathway for ventilation. Murphy Endotracheal Tube. The "Murphy eye" is the eponymous name for a hole on the side of mostendotracheal tubes (ETTs) that functions as a vent, and prevents the complete obstruction of the patient\'s airway, should the primary distal opening of an ETT become occluded.', 'role': 'assistant'}]