This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Diagnostic electron microscopy feature of Paragangliomas 
Select and explain. 
A. Small nests of round to ovoid with scarce cytoplasm, B. Mononuclear infiltrate with bizarre nuclei in perineural tissue, C. Lipofuscin deposits in perinuclear, intra lysosomal location, D. Dense neurosecretory granules
D: Dense neurosecretory granules
Answer: D: Dense neurosecretory granules 
Explanation: .