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
Which finding on electron microscopy indicates irreversible cell injury ? 
Select and explain. 
A. Dilatation of endoplasmic reticulum, B. Dissociation of ribosomes from rough endoplasmic reticulum., C. Flocculent densities in the mitochondria, D. Myelin figures.
C: Flocculent densities in the mitochondria
Answer: C: Flocculent densities in the mitochondria 
Explanation: . Flocculent densities in the mitochondria