Q4-AXYZ is a manufacturing firm that has suffered from high levels of variation in the performance of some production processes. The management of XYZ identified a few assignable causes of these variations as they are caused due to changes in working conditions, human errors, lack of knowledge about quality, and differences among materials. Assume you are hired by XYZ to redesign quality and product excellence. Develop an argument to explain which of the two designs - design for excellence or tolerance design - should be selected. Justify your selection by arguing the advantages of the design you select and the disadvantages of the design you discard (8 marks).