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
Cephalic phase of gastric secretion can be demonstrated by the following experiment: 
Select and explain. 
A. Heidenhain's pouch, B. Condition reflex, C. Pavlov's pouch, D. None of the above
C: Pavlov's pouch
Answer: C: Pavlov's pouch 
Explanation: A part of stomach is incompletely separated from the main portion and made into a small bag like pouch, which is called as pavlov's pouch.