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: Pathology
[{'content': "In Alzheimer's disease, plaque is made up of - \nSelect and explain. \nA. Tau protein, B. Beta amyloid, C. Huntington, D. Alpha synnuclein", 'role': 'user'}, {'content': 'Answer: B \nExplanation: . Beta amyloid', 'role': 'assistant'}]