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: Social & Preventive Medicine
[{'content': 'Highest concentration of iodine is found in: \nSelect and explain. \nA. Eggs, B. Fresh water fish, C. Oyster, D. Poultry', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Fresh water fish do not contain iodine but sea fish do. Highest amount of iodine is found in lobsters and oysters. Ref: Park, 22nd edition pg: 584', 'role': 'assistant'}]