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': 'The most potent topical coicosteroid is \nSelect and explain. \nA. Betamethasone valerate, B. Triamcinolone acetonide, C. Hydrocoisone acetate, D. Clobetasol propionate', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `d' i.e., Clobetasol propionate", 'role': 'assistant'}]