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: Answer is A (Ataxia): In most patients ataxia of gait and stance is the first manifestation of the disease.- Clinical Neurology by Goetz 2"d/742 Friedreich\'s ataxia presents with progressive staggering gait, frequent falling and titubation- Harrison Note: The first pathological changes in Friendreich\'s Ataxia are thought to occur is dorsal root ganglia with loss of large sensory neurons.', 'role': 'assistant'}]