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: Physiology
Pancreatic juice rich in water and electrolytes poor in enzymes is secreted in response to : 
Select and explain. 
A. Pancreatozymin, B. Cholecystokinin, C. Secretin, D. Proteins
C: Secretin
Answer: C: Secretin 
Explanation: C i.e. Secretin