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: Pharmacology
[{'content': 'Anti-IgE used in asthma is: \nSelect and explain. \nA. Trastuzumab, B. Epratuzumab, C. Toclizumab, D. Omalizumab', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Omalizumab', 'role': 'assistant'}]