This table, shows that Blair Supply had an end-of-year accounts receivable balance of $300,075. The table also shows how much of the receivables balance originated in each of the previous six months. The company had annual sales of $2.40 million and it normally extends 30-day credit terms to its customers. a. Use the year-end total to evaluate the firm's collection system. b. If 70% of the firm's sales occur between July and December, would this affect the validity of your conclusion in part a? Explain. Data table (Click on the icon located on the top-right corner of the data table below in order to copy its contents into a spreadsheet.) Month of Amounts receivable origin July August September October November December Year-end accounts receivable $3,890 2,035 34,030 15,125 52,035 192,960 $300,075