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: Skin
[{'content': 'A 24-year-old unmarried women has multiple nodular, cystic, pustular and comadonic lesions on face, upper back and shoulders for 2 years. The drug of choice for her treatment would be: \nSelect and explain. \nA. Acitretin, B. Isotretinoin, C. Doxycycline, D. Azithromycin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Isotretinoin', 'role': 'assistant'}]