Who among the following management thinkers developed the theory of 'Variation' (comprising Common Causes and Special Causes of variation) as part of quality management?

Which of the following statements correctly represent the core principles and practices of Total Quality Management (TQM)? A) Continuous improvement (Kaizen) is a core element of TQM philosophy. B) Quality responsibility lies primarily with top management, while employees execute instructions. C) Customer focus is central to defining quality standards. D) Benchmarking is used to compare processes and improve performance. E) TQM emphasizes prevention of defects rather than detection after occurrence. F) TQM relies mainly on inspection and end-product testing for quality assurance. G) Employee involvement and teamwork are essential for successful TQM implementation.

Which of the following statements regarding Quality Management concepts is correct?