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: Pathology
[{'content': 'FNAC is not diagnostic of which of the following thyroid lesions \nSelect and explain. \nA. Papillary carcinoma, B. Follicular carcinoma, C. Lymphoma, D. Anaplastic carcinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Extensive histological sampling is required for its diagnosis. Follicular carcinoma generally do not spread through lymphatics. Ref: Robbins and cotrans 9e Pg 1098', 'role': 'assistant'}]