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
True of carotid body tumor is ? 
Select and explain. 
A. Non-chromaffin paraganglioma, B. Good prognosis, C. Rarely metastasises, D. All
D: All
Answer: D: All 
Explanation: Answer is 'a' i.e. Non-chromaffin Paraganglioma; 'b' i.e. Good Prognosis; 'c' i.e. Rarely metastasises