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: Physiology
Autoregulation means 
Select and explain. 
A. Maintains the blood flow, B. Vary with change in pressure, C. Regulated by local metabolites, D. Well developed in the skin
A: Maintains the blood flow
Answer: A: Maintains the blood flow 
Explanation: None