This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
[{'content': 'Which clears and flushes food during inter-digestive period? \nSelect and explain. \nA. Gastrin, B. Migrating motor complex, C. Secretin, D. CCK', 'role': 'user'}, {'content': 'Answer: B \nExplanation: a hormone released into the bloodstream by the duodenum (especially in response to acidity) to stimulate secretion by the liver and pancreas Ref: guyton and hall textbook of medical physiology 12 edition page number:414,415,416', 'role': 'assistant'}]