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
Decreased Radio iodine uptake is I are seen in 
Select and explain. 
A. Toxic multinodular goiter, B. Grave's disease, C. Subacute thyroiditis, D. All
C: Subacute thyroiditis
Answer: C: Subacute thyroiditis 
Explanation: Answer is C (Subacute thyroiditis) Mayo Clinic Internal Medicine Concise Textbook (2007)/181: Harrison 18th/p 2917 Subacute Thyroiditis and Facititious thyroiditis are associated with decreased radioiodine uptake.