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;: (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
Answer is C. Parallel rays of tubular structures in lysosomes