This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
[{'content': 'Iodised salt was first staed in which country? \nSelect and explain. \nA. India, B. UK, C. Switzerland, D. Germany', 'role': 'user'}, {'content': "Answer: A \nExplanation: Iodine foification was first introduced in india. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 595", 'role': 'assistant'}]