<prompt> Which of the following aery is most common to undergo atherosclerotic changes leading to coronary aery disease ?Right coronary aeryLeft anterior descending coronary aeryLeft circumflex coronary aeryLeft main coronary aery  <response>: Left anterior descending coronary aery40-50 is most commonly involved in CAD, followed by Right coronary aery 30-40then Left Circumflex coronary aery 15-20. 