Question: Although the case focuses on AT&T Paradyne's activity-based costing (ABC), the firm also incorporates the elements of other management accounting and control tools such as Economic Value Added, target costing, balanced scorecard or the levers of control (e.g., beliefs system). What are the three major strength(s) and/or weakness(es) in total of AT&T Paradyne's entire control system (i.e., the ABC and the other management accounting and control tool elements combined)? You must identify at least one weakness but need not identify any strength. Discuss each strength or weakness SEPARATELY. Write no more than 3 page text in total. You may add any exhibit(s), if necessary.