In the chapter, when describing Figure 2-4a, it was argued that the Received and Summarizes relationships and TREASURER entity were not necessary. Within the context of this explanation, this is true. Now, consider a slightly different situation. Suppose it is necessary, for compliance purposes (e.g., Sarbanes-Oxley compliance), to know when each expense report was produced and which officers (not just the treasurer) received each expense report and when each signed off on that report. Redraw Figure 2-4a, now including any attributes and relationships required for this revised situation.