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: Pathology
Atherosclerosis in the coronary circulation most commonly affects - 
Select and explain. 
A. Left anterior descending artery, B. Left circumflex, C. Right coronary, D. All of the above
A: Left anterior descending artery
Answer: A: Left anterior descending artery 
Explanation: None