This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Malignancies, Subject name: Surgery
[{'content': 'Most common type of Ca thyroid having least hematogenous spread - \nSelect and explain. \nA. Follicular, B. Papillary, C. Anaplastic, D. Medullary', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Papillary 7", 'role': 'assistant'}]