This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Which of the following causes least irritation of the peritoneal cavity - 
Select and explain. 
A. Bile, B. Gastric enzymes, C. Blood, D. Pancreatic enzymes
C: Blood
Answer: C: Blood 
Explanation: Gastric juice, Pancreatic juices, bile, urine and meconium irritate the peritoneal cavity and lead to aseptic (or chemical) peritonitis.