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: Surgery
[{'content': 'Heavy pressure application during mask ventilation may compress: \nSelect and explain. \nA. Marginal mandibular nerve., B. Laryngeal nerve., C. Arytenoid cartilage., D. All of the above.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Heavy pressure application doing mask ventilation may compress the marginal – mandibular branch of facial N in angle of mandible Region.', 'role': 'assistant'}]