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
Which of the following hormones stimulates gastric emptying _________ 
Select and explain. 
A. Gastrin, B. Secretion, C. CCK, D. Gastric inhibitory peptide
A: Gastrin
Answer: A: Gastrin 
Explanation: Gastrin stimulates gastric emplying.
CCK, secretin, gastric inhibitory peptide (GIP) inhibits gastric emptying.