This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'CD marker of Angiosarcoma is? \nSelect and explain. \nA. CD 10, B. CD 19, C. CD 25, D. CD 31', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Robbins basic pathology 9th edition page no 362 Table:morphology The endothelial origin can be demonstrated in the poorly diffrentiated tumors by staining for the endothelial cell markers CD31 and von Wilebrand factor', 'role': 'assistant'}]