There are many aspects of a company that managers should focus on. Which of the following sets most completely describes key success factors for managers in terms of delivering performance to customers? Question content area bottom Part 1 A. cost and efficiency, quality, innovation B. cost and efficiency, shareholder value, quality, innovation C. cost and efficiency, management by exception, quality, innovation D. cost and efficiency, time, quality, innovation E. cost and efficiency, budgeting, quality, innovation