This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Which hormone stimulates pancreatic secretion that is rich in bicarbonate? 
Select and explain. 
A. Somatostatin, B. Secretin, C. CCK, D. Gastrin
B: Secretin
Answer: B: Secretin 
Explanation: .