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
Which of the following is not done for diagnosis of parotid tumor 
Select and explain. 
A. MRI, B. CT, C. Open surgical biopsy, D. FNAC
C: Open surgical biopsy
Answer: C: Open surgical biopsy 
Explanation: Open surgical biopsy is not preferred in parotid tumors.