This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Pathology
[{'content': "Virchow's triad includes all except \nSelect and explain. \nA. Vessel wall endothelial injury, B. Thrombus formation, C. Local blood stasis, D. Intimal tear", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. d (Intimal tear). (Ref. Robbin, Pathologic Basis of Disease, 6th ed., 124)Three primary influences predispose to thrombus formation, the so-called Virchow's triad;# Endothelial injury (single most vital factor)# Stasis or turbulence of blood flow# Blood hypercoagulability", 'role': 'assistant'}]