This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Medicine
[{'content': 'Petechiae in scurvy is due to \nSelect and explain. \nA. Platelet dysfunction, B. Thrombocytopenia, C. Clotting factor deficiency, D. Endothelial disintegration', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Vitamin C deficiency causes defective formation of collagen with impaired healing of wounds, capillary haemorrhage and reduced platelet adhesiveness (normal platelets are rich in ascorbate) . Petechiae are formed due to minor bleeds from capillary vessels due to endothelial disintegration . Ref - Davidson 23e p716', 'role': 'assistant'}]