This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Aerial disorders, Subject name: Surgery
The most common site of acute aoic dissection is:- 
Select and explain. 
A. Right lateral wall of ascending aoa, B. Arch of aoa, C. Suprarenal abdominal aoa, D. Infrarenal abdominal aoa
A: Right lateral wall of ascending aoa
Answer: A: Right lateral wall of ascending aoa 
Explanation: AOIC DISSECTION Aoic dissection is caused by circumferential or, less frequently, transverse tear of the intima. MC site: Right lateral wall of the ascending aoa Another common site: Descending thoracic aoa (just below the ligamentum aeriosum). Peak incidence: 6th and 7th decades.