Criteria for sliding hernia is:
A. Extraperitoneal organ takes part in formation of hernia sac
B. No content in hernia sac
C. Intraperitoneal organ takes part in formation of hernia sac
D. Mesoperitoneal organ takes part in formation of hernia sac
E. Presence of content in hernia sac
Answer: D. Mesoperitoneal organ takes part in formation of hernia sac