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': 'The level of which one of the following compounds is elevated in bronchial asthama - \nSelect and explain. \nA. PGI2, B. PGH2, C. Leukotrienes, D. Thromboxane', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]