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
Within which parts of a gastric gland are chief cells located 
Select and explain. 
A. Fundus, B. Isthmus, C. Neck, D. Gastric pit
A: Fundus
Answer: A: Fundus 
Explanation: Fundic glands (chief cells, parietal & mucous neck cells) are located in body and fundus of stomach.