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: Pathology
[{'content': 'Atheromatous plaque does not contain \nSelect and explain. \nA. Cholestrol crystals, B. Neutrophils, C. Smooth muscle fibres, D. Monocytes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The main components of atherosclerotic plaques are 1.Cells: Smooth muscle cells, monocytes/macrophages, T cells2.Extracellular matrix: Collagen, elastic fibers, proteoglycans3.Intra and extracellular lipids(Ref: Robbins 8/e p502)', 'role': 'assistant'}]