This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: ENT
A patient presented with gradually progressive painless mass since 10 yrs. It is firm to nodular & variable in consistency at each site. Most probable diagnosis is? 
Select and explain. 
A. Dermoid cyst, B. Sebaceous cyst, C. Pleomorphic adenoma, D. Malignancy
C: Pleomorphic adenoma
Answer: C: Pleomorphic adenoma 
Explanation: Pleomorphic Adenoma: M/C benign tumor of salivary glands. M/C seen in 30-40 y/o females. Arises from parotid, mandibular and other salivary glands. Presents as a parapharyngeal tumor in the oropharynx.