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': 'Amyloidosis of heart presents with -a) Arrhythmiab) AV blockc) ↑ed mass/voltage d) Hypertrophic cardiomyopathy \nSelect and explain. \nA. ab, B. abc, C. acd, D. bcd', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]