HY USMLE Q #786 – Cardio

A 72-year-old man is brought to emergency following an episode of retrosternal chest pain. An ECG is shown. He has left-dominant coronary circulation. Which of the following best reflects the normal pathway of blood through the occluded coronary vessel?

 Left main coronary → left circumflex artery → posterior descending artery
  Left main coronary → posterior descending artery → left circumflex artery
 Left main coronary → left anterior descending artery
  Right main coronary → anterior descending artery
 Right main coronary → posterior descending artery