For Each of the Following Situations,indicate the Program Data Editing

Short Answer

For each of the following situations,indicate the program data editing technique that is appropriate to detect the error:
a.A system user transposed digits when entering a customer's account number.
b.An input clerk input the wrong sales territory number for employee number 35 in a sales commissions payable program.
c.The data processing department failed to process all the items in a batch.