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
Preload is determined by ? 
Select and explain. 
A. Enddiastolic volume, B. Endsystolic volume, C. Ventricular ejection volume, D. None of the above
A: Enddiastolic volume
Answer: A: Enddiastolic volume 
Explanation: Ans. is 'a' i.e., Enddiastolic volume