The correct option is C Both of (A) and (B)
An aneurysm occurs when part of a blood vessel (artery) or cardiac chamber swells. Either the blood vessel is damaged, or there is a weakness in the wall of the blood vessel. Abdominal aortic aneurysm can be caused by atherosclerosis i.e accumulation of fatty deposits (cholesterol) on the artery walls. Endovascular stent graft repair is designed to help prevent an aneurysm from bursting.