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': 'Virchow’s triad includes all except \nSelect and explain. \nA. Injury to vein, B. Venous thrombosis, C. Venous stasis, D. Hypercoagulability of blood', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The factors that predispose to venous thrombosis were initially described by Virchow in 1856 and are known as Virchow’s triad.\nThese include\n\nStasis\nVascular damage\nHypercoagulability', 'role': 'assistant'}]