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: Surgery
Radioiodine ablation is preferred in 
Select and explain. 
A. Pregnancy, B. Graves disease, C. Young patients, D. Post surgery papillary carcinoma
D: Post surgery papillary carcinoma
Answer: D: Post surgery papillary carcinoma 
Explanation: Surgery is followed by RIA if thyroid tissue is left.
I131 is used which has a half life of 8 days.