Question 9 (8 marks) You are conducting an audit of a local pharmaceutical business. One of the recently assigned buying staff members is a former classmate of yours. He informs you during lunch one day that the company's buying department is reviewing their list of preferred suppliers and is perplexed as to why his line manager was emphatic that purchase orders should only be submitted to recommended suppliers. By stating that he personally knows a source who can deliver raw materials at a far lower price than the preferred providers, your friend feels he can save the firm thousands of dollars over time. Justify why purchasing from unauthorized suppliers is unacceptable and how supplier selection should be controlled