Regarding appendix, true statement is\

(A) Develops from midgut # VERMIFORM APPENDIX is located in the right lower quadrant of abdomen.> It is a narrow, worm shaped tube, arising from the posteromedial caecal wall, 2 cms or less below the end of the ileum. Its opening is occasionally guarded by a semicircular fold of mucous membrane known as the valve of Gerlach. The appendix is usually located at the junction of the taen ae, found on the surface of the caecum . Its length varies from 2-20 cms, with an average length of 9 cms.> Attachment of the base of the appendix to the caecum remains constant, whereas the tip can be found in a retrocaecal (65%)-commonest, pelvic (30%)-second most common, subcaecal, preileal, post-ileal or promontoric positions.> Mesoappendix has a free border which carries the blood supply to the organ, by the appendicular artery, a branch from the ileocolic.> Appendix develops from the midgut loop together with the caecum, ascending colon and the proximal two thirds of the transverse colon.> Appendicitis is the most common cause of acute abdomen in young people.