This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Henoch scholein purpura true is all except \nSelect and explain. \nA. IgA deposition, B. Non palpable purpura, C. Abdominal pain, D. Glomerulonephritis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]