This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'At the same concentration of steroid which of the following is most potent? \nSelect and explain. \nA. Ointment, B. Lotion, C. cream, D. Gel', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The potency of a topical coicosteroid depends on the formulation. Potency is also increased when a formulation is used under occlusive dressing or in interiginous areas. In general, ointments are more potent than creams or lotions.', 'role': 'assistant'}]