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: Microbiology
[{'content': 'True about prion protein diseases is all, except ? \nSelect and explain. \nA. Myoclonus is seen in 10% of the patients, B. Caused by infectious protein, C. Brain biopsy is diagnostic, D. Commonly manifests as dementia', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Myoclonus is seen in 10% of patients", 'role': 'assistant'}]