A 56-Year-Old Man Visited His Physician Complaining That He Experiences

A 56-year-old man visited his physician complaining that he experiences severe pain in both legs when taking long walks. He noticed recently that the cramp-like pain occurs after walking only a hundred yards. On questioning, he said that the pain quickly disappears on rest only to return after he walks the same distance. When the physician asked about his sex life the patient admitted that he was experiencing difficulty with erection.
-The symptoms and signs displayed by this patient can be explained by the following statements except which?

A) Arteriography of the abdominal aorta revealed blockage in the region of the bifurcation.
B) Only the right common iliac artery was involved by disease.
C) The gradual blockage of the aorta was caused by advanced arteriosclerosis.
D) An insufficient amount of blood was reaching both legs, causing pain (claudication) on walking.
E) The lack of blood entering both internal iliac arteries was responsible for the difficulty with erection.