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
A patient reported with Disto-oclusal amalgam restoration in 47 & complaints of sticking of food in interproximal area. Most common reason is? 
Select and explain. 
A. Broad contact area Buccolingually, B. Wide contact area occlugingivaly, C. Contact area too occlusively, D. Contact area too gingivally
D: Contact area too gingivally
Answer: D: Contact area too gingivally 
Explanation: None