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
Ackerman's tumor is: 
Select and explain. 
A. Mucoepidermoid carcinoma, B. Epidermoid carcinoma, C. Squamous cell carcinoma, D. Adenocarcinoma
C: Squamous cell carcinoma
Answer: C: Squamous cell carcinoma 
Explanation: 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