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': 'In Fitzgerald and Hallpike differential caloric test, cold-water irrigation at 30 degrees centigrade in the left ear in a normal person will include - \nSelect and explain. \nA. Nystagmus to the right side, B. Nystagmus to the left side, C. Direction changing nystagmus, D. Positional nystagmus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]