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
Amount of coronary flow per minute is? 
Select and explain. 
A. 225 ml, B. 250 ml, C. 50 ml, D. 300 ml
B: 250 ml
Answer: B: 250 ml 
Explanation: B i.e. 250 ml/min