This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
[{'content': 'Foam cells are formed by? \nSelect and explain. \nA. Neutrophills, B. Fibroblasts, C. Macrophages, D. All of them', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Macrophages * Foam cells are lipid-laden cells that derive predominantly from macrophages (M2 type), but smooth muscle cells can also imbibe lipid to become foam cells.* They are seen in atherosclerosis.", 'role': 'assistant'}]