This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Verrucuous carcinoma is \nSelect and explain. \nA. Extremely well differentiated squamous cell carcinoma, B. Poorly differentiated squamous cell carcinoma, C. Adenosquamous carcinoma, D. Adenocarcinoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Verrucous carcinoma (also known as Ackerman tumor) is an uncommon exophytic low-grade well-differentiated variant of squamous cell carcinoma. This neoplasm typically involves the oral cavity, larynx, genitalia, skin, and esophagus Refer robbins 9/e', 'role': 'assistant'}]