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': 'Most impoant hormone for gallbladder contraction to release bile \nSelect and explain. \nA. Secretion, B. CCK, C. VIP, D. Gastrin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: This peptide hormone induces gallbladder contraction and the release of pancreatic enzymes in the gut. Ref: guyton and hall textbook of medical physiology 12th edition page number:421,422,423', 'role': 'assistant'}]