This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Adenoid cystic carcinoma is also known as 
Select and explain. 
A. Cylindroma, B. Pindborg tumor, C. Warthins tumor, D. Pleomorphic adenoma
A: Cylindroma
Answer: A: Cylindroma 
Explanation: None