Knowledge Check Sandhill Works' uses a periodic inventory system. Its accounting records show the following as of December 31, 2025. Inventory, Dec. 31, 2025 Purchase Returns and Allowances Inventory, Jan. 1, 2025 Cost of goods purchased Cost of goods sold $ Compute cost of goods purchased and cost of goods sold. LA $ +A $3,900 750 5,600 Freight-In Purchases Purchase Discounts $1,670 96,900 1,160