This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: COPD and Asthma, Subject name: Medicine
[{'content': 'All of the following are useful for treating acute bronchial asthma in children except? \nSelect and explain. \nA. 100% Oxygen, B. Hydrocoisone, C. Salbutamol, D. Sodium Cromoglycate inhalation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cromolyn sodium inhibits the release of histamine, leukotrienes and other mediators from sensitised mast cells exposed to specific antigens. It has no intrinsic anti-inflammatory, antihistamine, or vasoconstrictive effects.', 'role': 'assistant'}]