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
Function of hepatic kupffer cells is: 
Select and explain. 
A. Formation of sinusoids, B. Vitamin-A storage, C. Increases blood perfusion, D. Phagocytosis
D: Phagocytosis
Answer: D: Phagocytosis 
Explanation: None