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: Pathology
[{'content': 'Mast cells release interleukin - \nSelect and explain. \nA. 1, B. 2, C. 4, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: All are true', 'role': 'assistant'}]