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
A shift of posture from supine to upright posture is associated with cardiovascular adjustments. Which of the following is NOT true in this context: 
Select and explain. 
A. Rise in central venous pressure, B. Rise in hea rate., C. Decrease in cardiac output., D. Decrease in stroke volume
A: Rise in central venous pressure
Answer: A: Rise in central venous pressure 
Explanation: A i.e. Rise in central venous pressure On assumption of erect posture, the force of gravity opposes the return of blood incentral venous pressure)Q