This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'Cold caloric test stimulates \nSelect and explain. \nA. Cochlea, B. Lateral semicircular canal, C. Posterior semicircular canal, D. All', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Stimulation of semicircular canal produces nystagmus and the direction of nystagmus is determined by the plane of the canal being stimulated. In cold caloric test, the lateral semicircular canal is stimulated. (Ref: Diseases of EAR, NOSE AND THROAT by PL DHINGRA - 6th Edition)', 'role': 'assistant'}]