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: Pathology
A one year old boy presented withhepatosplenomegaly and delayed milestones. Theliver biopsy and bone marrow biopsy revealedpresence of histiocytes with PAS-positive Diastaseresistantmaterial in the cytoplasm. Electronmicroscopicexamination of these histiocytes is mostlikely to reveal the presence of; 
Select and explain. 
A. Birbeck granules in the cytoplasm, B. Myelin figures in the cytoplasm, C. Parallel rays of tubular structures in lysosomes, D. Electron dense deposit in the mitochondria
C: Parallel rays of tubular structures in lysosomes
Answer: C: Parallel rays of tubular structures in lysosomes 
Explanation: Parallel rays of tubular structures in lysosomes