<prompt> The best treatment for class V lesion on a tooth along with extensive class II caries is:Restoration of class II followed by class VCast gold restorationA full crown restorationRestoration of class V followed by class II  <response>: With class V lesion and extensive class II cavity in the same tooth the remaining enamel surface with the supported healthy dentin will be much less hence in such situation full crown restoration will be long lasting. 