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: Unknown
A standing person lies down.  Which of the following physiological change occurs immediately? 
Select and explain. 
A. Increased heart rate, B. Decreased blood flow to the apices of the lung, C. Immediate increase in venous return, D. Increase in blood pressure
C: Immediate increase in venous return
Answer: C: Immediate increase in venous return 
Explanation: (Refer: Ganong’s Review of Medical Physiology, 24th edition, pg no: 591-594)