This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastro-Intestinal Tract, Subject name: Pharmacology
[{'content': 'A small amount of atropine is added to diphenoxylate in order to: \nSelect and explain. \nA. Suppress associated vomiting of gastroenteritis, B. Augment the anti-motility action of diphenoxylate, C. Block side effects of diphenoxylate, D. Discourage overdose and abuse of diphenoxylate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Atropine is intentionally added to diphenoxylate in fixed dose combinations to intentionally produce the adverse effects. - If the person takes diphenoxylate in large doses to get the euphoria, atropine will produce adverse effects and the person will not abuse the drug.', 'role': 'assistant'}]