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
All are true about secretin except 
Select and explain. 
A. Inhibits gastric emptying, B. Increases bicarbonate rich pancreatic secretion, C. Potentiates action of CCK, D. | ses bile salt & bile acids
D: | ses bile salt & bile acids
Answer: D: | ses bile salt & bile acids 
Explanation: Actions of secretin: Increases bicarbonate-rich pancreatic secretion. Stimulates bile secretion. Potentiates effect of CCK on pancreas. It causes contraction of pyloric sphincter delaying gastric emptying. Ref: Medical physiology, Indu Khurana