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;
Birbeck granules in the cytoplasm Myelin figures in the cytoplasm Parallel rays of tubular structures in lysosomes Electron dense deposit in the mitochondria