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': 'Aicular surface of the sarum extends upto how many veebrae in males ? \nSelect and explain. \nA. 1 to 11/2, B. 2 to 21/2, C. 3 to 31/2, D. 4 to 41/2', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Aicular surface of sacrum: the rough aicular surface on the lateral aspects of the sacrum that aiculates with the ilium on each side.', 'role': 'assistant'}]