Colon conduit in Caustic injuries

Q What is not true about the use Colon conduit for caustic injuries
a. Left colon is used  trans hiatally and anastomosed to  posterior wall of stomach
b.Order of anastomosis is  ColoGastric -Colo- Colic, Colo-Cervical
c. MCA and RCA always cut
d. Based on ascending LCA