This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autoimmune skin disorders, Subject name: Dental
[{'content': 'Ingram regimen is used in treatment of \nSelect and explain. \nA. Vitiligo, B. Psoriasis, C. Lichen planus, D. Lichen nitidus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ingram's regimen used to treat psoriasis tar bath followed by irradiation with minimal erythema dose with UVB followed by application of dithranol/anthralin paste. goekermans regimen is application of coal tar for 22hrs followed by tar bath and exposure to UVB. IADVL textbook of dermatology page 1043", 'role': 'assistant'}]