This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Anatomy
[{'content': 'Trigered effect in myocardium is due to: \nSelect and explain. \nA. Malignant change, B. Fat deposition, C. Seen in rheumatic fever, D. Associated with myocarditis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In a pattern of lipid deposition seen with prolonged moderate hypoxia,such as that produced by profound anemia,there is intracellular deposits of fat,which create grossly apparent bands of yellowed myocardium alternating with bands of darker,red brown,uninvolved myocardiun. (ref Robbins 8/e p34)', 'role': 'assistant'}]