This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
Decreased Radio iodine uptake is/are seen in - 
Select and explain. 
A. Toxic multinodular goiter, B. Grave's disease, C. Subacute thyroiditis, D. Autonomous nodular goitre
C: Subacute thyroiditis
Answer: C: Subacute thyroiditis 
Explanation: Answer is option 3- subacute thyroiditis High RAIU is seen in :- graves disease, toxic nodule, autonomous nodular goitre, metastatic follicular thyroid carcinoma, hcg dependent hypehyroidism of trophoblastic disease. Low RAIU is seen in :- subacute thyroiditis, lymphocytic thyroiditis, postpaum thyroiditis, exogenous hypehyroidism. Ref - Harrisons internal medicine 20e topic thyroid from p2692