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': 'True about internal ear anatomy \nSelect and explain. \nA. Three semicircular canals here 6 openings into the vestibule, B. The angle between anterior & posterior SCC is 180deg, C. Vestible is the central chamber, D. Spiral canal makes 2 turns', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Vestible is the central chamber', 'role': 'assistant'}]