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: ENT
[{'content': 'Cold caloric test stimulates - \nSelect and explain. \nA. Cochlea, B. Lateral semi circular canal, C. Posterior semicircular canal, D. All', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Caloric Tests: Important points\n\nPrinciple: to induce nystagmus by thermal stimulation of vestibular system.\nLateral semicircular canalQ is commonly tested by all these tests\nThere are 3 methods of performing these tests:', 'role': 'assistant'}]