This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
[{'content': 'All of the following factors are produced by hepatocytes except \nSelect and explain. \nA. Fibrinogen, B. Prothrombin, C. Von willebrand factor, D. Factor VIII', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Von Willebrand factor large-> 20,000 kD multimeric molecule composed of +- 200 kD monomers, synthesized by vascular endothelium, megakaryocytes, and platelets; vWFs hemostatic efficiency is related to multimer size.Ref: Ganong&;s review of medical physiology 23rd edition Page no: 532', 'role': 'assistant'}]