This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiopulmonary Resuscitation And Mechanical Ventilation, Subject name: Anaesthesia
[{'content': 'Most commonly involved segment of Lungs in Foreign body aspiration (Supine position) \nSelect and explain. \nA. 1, B. 2, C. 3, D. 4', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 3 (Lobe: Right lower lobe lung)', 'role': 'assistant'}]