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: Medicine
Best natural source of iodine is 
Select and explain. 
A. Milk, B. Sea foods, C. Salt, D. Green leafy Vegetables
B: Sea foods
Answer: B: Sea foods 
Explanation: Best natural source of iodine is - Sea foods.