9-1 c. Determine if Simpson follows their established policy for the due date for payment for each sales transaction. Simpson's polio].r is that the due date for payment is 30, 60, or 90 days from the billing date, depending on the 1volume of business that the customer does with Simpson in the previous year. For customers with annual sales of less than $100,000 payment is due in 30 days, from $100,000 to $250,000 payment is due in 60 clays, and over $250,000 payment is due in 90 days. You believe the 2013 sales amounts are similar to those in the previous years, so you should use those amounts to determine whether the policy is being followed for each customer. Hint: Summarize sales by customer and save in a separate le