This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Salivary Gland, Subject name: Surgery
[{'content': "Ackerman's tumor is: \nSelect and explain. \nA. Mucoepidermoid carcinoma, B. Epidermoid carcinoma, C. Squamous cell carcinoma, D. Adenocarcinoma", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) Squamous cell carcinomaRef: Oxford textbook of oncology; vol. 1/1995/1046* Ackerman's Tumor - also known as Verrucous carcinoma.* A type of Squamous cell carcinoma - well differentiated and can occur in any part of respiratory or digestive tract.* For Verrucous Carcinoma - RT is not given, Only surgery must be done", 'role': 'assistant'}]