Attached is a Purchases on Account Flowchart Purchases on Account FlowChart.pdf from your SUA Instructions, FlowCharts & Ledgers booklet on page 22. Identify three (3) internal controls from the attached Flowchart and fully explain them in terms of internal control objectives, activities, functions, segregation of duties (if applicable) and how they work. You will need to write about 6 to 12 COMPLETE sentences for each of the selected internal control from the attached Flowchart