Part2 For this problem, use files in the \"Sales and Collection\" subfolder under tables in the ACL_Rockwood project. This le contains information on sales and invoices generated during calendar year 2014, including those that have been paid versus those still outstanding. a. Obtain and print statistical information for Invoice Amount. "What is the total amount of invoices generated during the year? Do any invoices have a negative value? b. What is the total amount of invoices still outstanding (not yet paid) at the end of the year? Note the file includes a default payment date for unpaid invoices that will be updated once payment is received. c. From the summary (Heated above, click on the \"Outstanding\" invoices to examine the details of those still outstanding. Sort the \"invoice_date\" column in ascending order. 1What concerns do you have, if any, about the collectibility of the invoice amounts? (Quick Sort) Howr might the evidence obtained in parts a. through c. above help the auditor in tesiing accounts receivable