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 of the following enzymes decreases gastric motility: \nSelect and explain. \nA. Secretin, B. CCK-PZ., C. Both., D. None.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Secretin augments the action of CCK-PZ but secrete watery alkaline pancreatic juice. \nThus, both SECRETIN and CCK-PZ decreases gastric motility.', 'role': 'assistant'}]