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': 'NOT a true rib \nSelect and explain. \nA. 5 th, B. 6 th, C. 7th, D. 8th', 'role': 'user'}, {'content': 'Answer: D \nExplanation: True ribs: Ribs directly articulating with sternum through costal cartilage.\nThey are ribs 1 to 7\n• False ribs: Ribs that do NOT articulate directly with sternum. Ribs 8 to 12th.', 'role': 'assistant'}]