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: Medicine
[{'content': "Earliest presentation of Friedrich's ataxia is - \nSelect and explain. \nA. Ataxia, B. Seizures, C. Optic atrophy, D. Stuttering", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]