This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oncology, Subject name: Medicine
[{'content': 'Has the best prognosis of all thyroid malignancies For above statements, select the most likely type of thyroid cancer \nSelect and explain. \nA. anaplastic thyroid cancer, B. follicular cancer of the thyroid, C. lymphoma of the thyroid, D. papillary cancer of the thyroid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Papillary cancer has the best prognosis of all thyroid cancers. Although it is seven times more common than follicular cancer, fewer people die from it. Even with follicular cancer, most patients will die of other diseases. In common with other thyroid cancers, age seems to be an independent risk factor for poor prognosis.', 'role': 'assistant'}]