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': 'With which of the following receptors theophylline has an antagonistic interaction ? \nSelect and explain. \nA. Histamine receptors, B. Bradykinin receptors, C. Adenosine receptors, D. Imidazoline receptors', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]