This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid and Parathyroid, Subject name: Pathology
[{'content': 'Most common Thyroid CA post radiation exposure - \nSelect and explain. \nA. Papillary CA, B. Medullary CA, C. Follicular CA, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., Papillary CA o Radiation induced thyroid carcinoma is papillary carcinoma."Papillary carcinoma accountsfor 80% ofall thyroid malignancies in iodine sufficient areas and is the predominant thyroid cancer in children and individuals exposed to external radiation', 'role': 'assistant'}]