This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: ENT
[{'content': 'Sign suggestive of malignant change in parotid gland tumor- \nSelect and explain. \nA. Skin ulceration, B. Increasing pain, C. Facial palsy, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., All of the above'Red flag' features suggesting the possibility of malignancy include:o Facial nerve weaknesso Rapid increase in the size of the lump.o Ulceration or induration (or both) of the mucosa or skin overlying fixed skino Paraesthesia or anaesthesia of neighbouring sensory nerveso Intermittent pain, increasing relentlessly.o History of previous skin cancer, Sjogren's syndrome or previous radiation to the head and neck.", 'role': 'assistant'}]