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: Dental
[{'content': 'A patient comes to your clinic with complaint of food, lodgement/sticking in interproxlmal area of 47. On intra-oral examination, 47 is restored with disto- occlusal amalgam restoration. What can be the most probable reason for patient problem? \nSelect and explain. \nA. Contact area placed more gingivally, B. Occlusogingivally contact area become wide, C. Bucco-lingually contact area wide, D. Contact area placed more occlusally', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]