This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inner Ear, Subject name: ENT
[{'content': 'All are required for balancing EXCEPT: \nSelect and explain. \nA. Visual system, B. Olfactory system, C. Proprioception, D. Vestibule and cochlea', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) Olfactory systemRef: Dhingra's ENT 5th ed. / 22* Requirements for balancing:# Vision# Vestibule and cochlea# Proprioception# Cerebellum", 'role': 'assistant'}]