Which of the following takes the route of business process reengineering to attain operational excellence? Group of answer choices Ericsson introduces continuous-improvement business philosophy at its customer care centers. AT&T works toward creating a total quality culture by continuously reviewing the performance of every value chain activity. Acer Phones uses advanced statistical methods to remove the causes of defects at its manufacturing units. Honeywell strives to incrementally reduce defects through an ongoing assessment process. Cellkon pulls the pieces of an activity out of different departments to create a cross-functional work group