On January 1, 2021, the general ledger of Big Blast Fireworks includes the following account balances: Accounts Cash Accounts Receivable Allowance for Uncollectible Accounts Inventory Land Accounts Payable Notes Payable (8%, due in 3 years) Common Stock Retained Earnings Totals Debit Credit $ 25,500 45,500 $ 3,900 48,000 88,600 26,200 48,800 74,000 55,500 $207,600 $207,600 The $48,000 beginning balance of inventory consists of 480 units, each costing $100. During January 2021, Big Blast Fireworks had the following inventory transactions: January 3 Purchase 1,650 units for $183,150 on account ($111 each). January 8 Purchase 1,750 units for $203,000 on account ($116 each). January 12 Purchase 1,850 units for $223,850 on account ($121 each). January 15 Return 190 of the units purchased on January 12 because of defects. January 19 Sell 5,400 units on account for $810,000. The cost of the units sold is determined using a FIFO perpetual inventory system. January 22 Receive $793,000 from customers on accounts receivable. January 24 Pay $580,000 to inventory suppliers on accounts payable. January 27 Write off accounts receivable as uncollectible, $2,700. January 31 Pay cash for salaries during January, $137,000. The following information is available on January 31, 2021. a. At the end of January, the company estimates that the remaining units of inventory are expected to sell in February for only $100 each