This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Von Willebrand&;s factor is synthesized in which one of the following - \nSelect and explain. \nA. Vascular endothelium, B. Macrophages, C. Liver, D. Eosinophils', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The Von willebrand factor is synthesized in the endothelial cells ,megakaryocytes and platelets While the principal site of synthesis of factor VIII is the liver Reference :textbook of Pathology ,7th edition ,Author: Harsha Mohan, page number 314.', 'role': 'assistant'}]