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': 'Which of the following statements about Histamine is true: September 2012 \nSelect and explain. \nA. Is found in Mast cells, B. Increases gastric acid secretion, C. Related to arousal and blood pressure, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans: D i.e. All of the above Histamine Histamine is formed by: Decarboxylation of histidine Function of histamine: Mediates triple response', 'role': 'assistant'}]