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: Surgery
Removal of senescent RBC from circulation by spleen is called - 
Select and explain. 
A. Culling, B. Pitting, C. Filtering, D. Phagocytosis
A: Culling
Answer: A: Culling 
Explanation: None