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': 'What are Heart failure cells \nSelect and explain. \nA. Lipofuscin containing cardiac myocytes, B. Pigmented alveolar macrophages, C. Swollen cells in liver, D. Pale cells in pancreatic acini.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hemasiderin containing macrophages in the alveoli are indicators of pulmonary edema is cases of left heart failure. Hence, they are called Heart failure cells.', 'role': 'assistant'}]