This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid, Subject name: Surgery
[{'content': 'A well differentiated follicular carcinoma of thyroid can be best differentiated from a follicular adenoma by:- \nSelect and explain. \nA. Huhle cell change, B. Lining of tall columnar and cuboidal cells, C. Vascular invasion, D. Nuclear features', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Vascular invasion is best to diffrentiate between follicular carcinoma and Follicular adenoma', 'role': 'assistant'}]