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
[{'content': 'Which causes antral gastrin release \nSelect and explain. \nA. Antral distension, B. Acid, C. Secretin, D. Calcitonin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Gastrin release stimulated by\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Distension of stomach\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Peptides and amino acids in stomach and duodenum\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Vagal neurotransmitter GRP\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Epinephrine\n\xa0Gastrin release inhibited by\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Acid in duodenum\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Secretin, GIP, VIP, CCK, somatostatin, glucagon, calcitonin', 'role': 'assistant'}]