This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Gastric acid secretion is stimulated during several phases associated with the ingestion and digestion of a meal. Which phase is associated with the bulk of acid secretion? 
Select and explain. 
A. Cephalic, B. Esophageal, C. Gastric, D. Intes nal
C: Gastric
Answer: C: Gastric 
Explanation: .