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: Physiology
Juice rich in water/electrolytes, poor in enzymes is secreted from the organ by? 
Select and explain. 
A. Secretin, B. CCK, C. Gastrin, D. Somatostatin
A: Secretin
Answer: A: Secretin 
Explanation: Ans. (a) Secretin(Ref: Ganong, 25th ed/p.460)Secretin stimulates exocrine pancreas to secrete pancreatic juice rich in water and bicarbonate