This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Iodine status in a population is measured using \nSelect and explain. \nA. TSH, B. T3,T4, C. Thyroglobulin, D. Urinary iodine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Iodine sufficiency is defined as a median urinary iodine concentration of: *100 to 299 mcg/L for children and nonpregnant adults *150 to 249 mcg/L for pregnant women Iodine deficiency is defined by the following median urinary iodine concentrations: *Mild iodine deficiency - 50 to 99 mcg/L *Moderate deficiency - 20 to 49 mcg/L *Severe deficiency - <20 mcg/L Ref : Park 23rd edition Pgno : 624', 'role': 'assistant'}]