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
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: 
Select and explain. 
A. Acitretin, B. Isotretinoin, C. Doxycycline, D. Azithromycin
B: Isotretinoin
Answer: B: Isotretinoin 
Explanation: B i.e. Isotretinoin