This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Dental
[{'content': 'The most potent topical coicosteroids is - \nSelect and explain. \nA. Hydrocoisone 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: Super potent topical coicosteroids Clobetasol propionate 0.05% halobetasolpropionate 0.05% betametnasone dipropionate 0.05% Fitzpatricks textbook of dermatology, principles of topical therapy page 3363', 'role': 'assistant'}]