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
Drug of choice for treatment of psoriasis involving <10% of BSA (body surface area) is 
Select and explain. 
A. Methotrexate, B. Oral steroids, C. Topical steroids, D. Topical calcipotriol
D: Topical calcipotriol
Answer: D: Topical calcipotriol 
Explanation: Topical steroids & topical calcipotriol can be used for treating psoriatic lesions involving <10% body surface area & calcipotriol is the drug of choice.