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
Carcinoma Ex pleomorphic adenoma is 
Select and explain. 
A. Malignant change of pleomorphic adenoma, B. Regrowth of pleomorphic adenoma after superficial parotidectomy due to inadquate removal, C. Painless condition, D. Slow and progressive growth of pleomorphic adenoma
A: Malignant change of pleomorphic adenoma
Answer: A: Malignant change of pleomorphic adenoma 
Explanation: Carcinoma Ex pleomorphic Adenoma / Malignant mixed tumour

Malignant change of pleomorphic adenoma
Has rapid growth and painful
Leads to paraesthsia and facial weakness.