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: Pathology
Commonest salivary gland tumour in children 
Select and explain. 
A. Lymphoma, B. Pleomorphic adenoma, C. Adenoid cystic carcinoma, D. Mucoepidermoid carcinoma
D: Mucoepidermoid carcinoma
Answer: D: Mucoepidermoid carcinoma 
Explanation: None