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 contains- \nSelect and explain. \nA. 5% iodine & 10% KI, B. 10% Iodine & 20% KI, C. 10% iodine & 15% KI, D. 5% iodine & 15% KI", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is `a' i.e., 5% iodine & 10% KI", 'role': 'assistant'}]