This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
All are true about Giant cell aeritis except 
Select and explain. 
A. Involves large to small sized areteries, B. Granulomatous inflammation, C. Most commonly involved aery is abdominal aoa, D. Segmental nature of the involvement
C: Most commonly involved aery is abdominal aoa
Answer: C: Most commonly involved aery is abdominal aoa 
Explanation: Giant cell (temporal) aeritis is the most common form of vasculitis among the elderly in developed countries. It takes the formof chronic, typically granulomatous, inflammation of large tosmall size aeries, mainly those supplying the head--especially the temporal aeries.Veebral and ophthalmic aeries, as well as the aoa (giant cell aoitis), also can be involved.Because ophthalmic aery involvement can lead to suddenand permanent blindness, affected persons must be diagnosedand treated promptly.Robbins Basic pathology,9th edition,pg no.350