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: Pharmacology
[{'content': 'Best agent tor premenstrual syndrome management: \nSelect and explain. \nA. Progesterone, B. Anxiolytics, C. SSRI, D. Vitamin E', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans.'c'SSRI", 'role': 'assistant'}]