After watching the CNBC Marketplace video below:Best before dates: How supermarkets tamper with your food https://www.youtube.com/watch?v=ZxCT_D6HBd8&t=2s A. How do you think the supermarkets in the video approach to quality impact purchasing and sourcing strategy? B. If you were in charge of setting policy and safety standards for supermarkets,which approach (six-sigma, statistical process control, or Taguchi method) do you think supermarkets should adopt? Why did you select that approach, and what specific evidence from the video supports your response?