<prompt>  A patient comes to your clinic with complaint of food, lodgementsticking 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?Contact area placed more gingivallyOcclusogingivally contact area become wideBucco-lingually contact area wideContact area placed more occlusally 