This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
[{'content': 'The costal cailages of these ribs do not reach the sternum \nSelect and explain. \nA. 11th & 12th, B. 1st & 2nd, C. 6th & 7th, D. 8th, 9th & 10th', 'role': 'user'}, {'content': 'Answer: D \nExplanation: 8,9,10 the ribs are joined to the next higher cailage B D CHOURASIAS HUMAN ANATOMY UPPER LIMB THORAX VOLUME, 1 SIXTH EDITION, Page no, 196', 'role': 'assistant'}]