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: Dental
[{'content': 'The most potent topical corticosteroids is – \nSelect and explain. \nA. Hydrocortisone butyrate cream 0.1%, B. Betamethasone valerate cream 0.1%, C. Clobetasol propionate cream 0.5%, D. Clobetasone butyrate cream 0.5%', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Clobitasol propionate 0.5% is a superpotent (class 1-most potent class) topical steroid.', 'role': 'assistant'}]