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': 'Which of the following is not typical of Parkinson’s disease \nSelect and explain. \nA. Rigidity, B. Myoclonus, C. Tremors, D. Bradykinesia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Triad in PD is rigidity, bradykinesia and tremor.', 'role': 'assistant'}]