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': 'One of the following is a characteristic of Henoch -Schonlein Purpura: \nSelect and explain. \nA. Blood in stool, B. Thrombocytopenia, C. Intracranial hemorrhage, D. Susceptibility to infection', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Blood in Stools) : Blood in stool (melena) and hematemesis are characteristically seen in Henoch Scholein Purpura as a manifestation of vasculitis of abdominal viscera.', 'role': 'assistant'}]