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': 'In bronchial asthma the mechanism of action of corticosteroids is : \nSelect and explain. \nA. Relax airway smooth muscle directly, B. Inhibits mast cell deregulation, C. Inhibits adenosine receptors, D. Inhibits lymphocytic eosinophilic mucosal inflammation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]