Regarding abdominal vascular anatomy, all of the following are true EXCEPT:

• A. the left renal vein lies under the superior mesenteric artery
• B. the appendix is supplied by the ileo colic branch of the superior mesenteric artery
• C. the left gastro epiploic artery is a branch of the splenic artery
• D. the portal vein lies posterior to the pylorus
• E. the duodenum receives no supply from the superior mesenteric artery