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': 'Inhibition of 5–lipoxygenase is useful in : \nSelect and explain. \nA. Cardiac failure, B. Bronchial asthma, C. Hepatic failure, D. Arthritis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Leukotrienes are potent bronchoconstricting agents. These agents play a major role in the pathogenesis of bronchial asthma. The drugs acting by inhibiting their synthesis (i.e. lipoxygenase inhibitors) or action (Cys-LT receptor antagonists) are useful in the prophylaxis of bronchial asthma.', 'role': 'assistant'}]