6. Blue Company's accounting records show the following at the year ending on December 31, 2020: 4255 ooo DOO Purchase Discounts Freight - In Purchases Beginning Inventory Ending Inventory Purchase Returns $ (15,000) (12,500) 425,000 40,000 150,000) (10,000) 465,000 87,500 Using the periodic system, the cost of goods sold is a. $390,000 b. $402,500. c. $415,000 d. $425,000