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': "Lugol's iodine is given to the patient: \nSelect and explain. \nA. Before surgery, B. After surgery, C. During surgery, D. Adjuvant therapy", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]