<prompt> With regard to surgical site infection, what is it called if bacteria are dividing and have invaded wound surfaceContaminationColonizationTropical infectionLocal infection  <response>: ContaminationBacteria are on the wound surface. No division occurringColonization Bacteria are dividingTropical infection Critical colonizationBacteria are dividing and have invaded the wound surface. There may be an increasing variety of bacteria present ; Biofilm may be presentLocal infectionBacteria and or their products have invaded the local tissue 