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': 'Treatment of psoriasis include all except – \nSelect and explain. \nA. Retinoids, B. Methotrexate, C. Cyclosporine, D. Oral corticosteroides', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Unstable psoriasis may be brought under control with liberal application of topical bland emollient & supportive therapy.\nOral methotrexate, retinoids, cylosporine can be used; however, systemic steroids are usually avoided for the fear of precipitating pustular psoriasis upon withdrawal.\nOnly in pregnancy with pustular psoriasis (impetigo gestationis), steroids are drug of choice.', 'role': 'assistant'}]