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: Anatomy
Vasa Vasorum of ascending aoa arises from ? 
Select and explain. 
A. Left coronary aery, B. Anterior interventricular aery, C. Posterior interventricular aery, D. Left atrium
A: Left coronary aery
Answer: A: Left coronary aery 
Explanation: Clinical anatomy"Both coronary aeries supply vasa vasorum of ascending aoa" "Coronary aeries are vasa vasorum of ascending aoa" Vasa vasorum of ascending aoa and arch of aoa arise from :i) Coronary aeries (at their ostia).ii) Brachiocephalic trunk.iii) Bronchial aery.Vasa vasorum of descending aoa arise from':i) Intercostal aeries (thoracic pa).ii) Lumbar and mesenteric aeries (abdominal pa).