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': 'Theophylline given for bronchial asthma acts by inhibiting phophodiesterose enzyme. It also acts by inhibiting: \nSelect and explain. \nA. Lipoxygenase enzyme, B. Adenosine receptors, C. Histamine receptors, D. Monoamine oxidase enzyme', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Theophylline has antagonistic interaction with adenosine receptors.', 'role': 'assistant'}]