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': 'Physiological antagonism is found in: \na) Isoprenaline and salbutamol\nb) Isoprenaline and adrenaline\nc) Isoprenaline and propranolol\nd) Adrenaline and histamine\ne) Salbutamol and leukotrienes \nSelect and explain. \nA. ab, B. cd, C. ac, D. de', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Physiological antagonists are those drugs that\xa0produce opposite action by acting on different\xa0receptors.\nAdrenaline reverses the bronchoconstrictor action of histamine (via. H1 receptors) by cauing\xa0bronchodilation (through β2 receptors). Therefore,\xa0these are physioIogical antagonists.', 'role': 'assistant'}]