This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
[{'content': 'vWF protects: \nSelect and explain. \nA. Factor V, B. Factor VI, C. Factor VII, D. Factor VIII', 'role': 'user'}, {'content': "Answer: D \nExplanation: d. Factor VIII(Ref: Nelson's 20/e p 2390, Ghai 8/e p 349)2 major functions of vWF are: Platelet adhesion via Gp Ib/IX and stabilization of factor VIII in circulation.", 'role': 'assistant'}]