This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2018, Subject name: Pathology
[{'content': 'Which of the following is not true regarding Von Willebrand disease? \nSelect and explain. \nA. Normal platelet count, B. Quantitative defects are seen in subtypes 1 and 3 von Willebrand disease, C. Hemahrosis is the usual presentation, D. Produced by endothelial cells', 'role': 'user'}, {'content': 'Answer: C \nExplanation: VWD characterized by functional defect in the platelets (but normal platelet count) Reduced functional half-life of clotting factor VIII VWD has three subtypes I /II/III I and III subtypes characterized by deficiency of Von Willebrand factor(quantitative problem) Subtype II is characterized by functional defect of von Willebrand factor because of genetic mutation Mucus membrane bleeding is seen in patients', 'role': 'assistant'}]