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
Stimulation for gastric emptyinga) Secretinb) CCKc) Gastrind) Distension 
Select and explain. 
A. ab, B. bc, C. cd, D. ac
C: cd
Answer: C: cd 
Explanation: Distension of stomach by food leads to peristaltic wave to empty the gastric content. Gastrin also increases gastric emptying.