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: Anatomy
[{'content': 'In a standing man, in midaxillary line, lower border of pleura reaches: \nSelect and explain. \nA. 6th rib, B. 8th rib, C. 10th rib, D. 12th rib', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Surface marking of pleura"All the even ribs, in order: 2, 4, 6, 8, 10, 12 show its route":Rib2: Sharp angle inferiorlyRib4: The left pleura does a lateral shift to accommodate heaRib6: Both diverge laterallyRib8: Midclavicular lineRib10: Midaxillary lineRib12: The back', 'role': 'assistant'}]