This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Most common cause of generalised peritonitis in a 40 year old adult male is - 
Select and explain. 
A. Enteric perforation, B. Ruptured liver abscess, C. Duodenal Ulcer perforation, D. Perforated Ca stomach
C: Duodenal Ulcer perforation
Answer: C: Duodenal Ulcer perforation 
Explanation: None