Swifty Company sells one product. Presented below is information for January for Swifty Company. Jan. 1 4 11 13 20 27 Inventory Sale Purchase Sale Purchase 103 units at $5 each 82 units at $8 each 135 units at $7 each 102 units at $9 each 167 units at $7 each 108 units at $11 each Sale Swifty uses the FIFO cost flow assumption. All purchases and sales are on account. (a) Assume Swifty uses a periodic system. Prepare all necessary journal entries, including the end-of-month closing entry to record cost of goods sold. A physical count indicates that the ending inventory for January is 113 units. (If no entry is required, select "No entry" for the account titles and enter for the amounts. Credit account titles are automatically indented when amount is entered. Do not indent manually.) Date Account Titles and Explanation Debit Credit eTextbook and Media List of Accounts Save for Later Attempts: 0 of 3 used Submit Answer (b) Compute gross profit using the periodic system. Gross profit $ (c) Assume Swifty uses a perpetual system. Prepare all necessary journal entries. (If no entry is required, select "No entry" for the account titles and enter for the amounts. Credit account titles are automatically indented when amount is entered. Do not indent manually.) Date Account Titles and Explanation Debit Credit (To record the sale) (To record the cost of inventory) (To record the sale) (To record the cost of inventory) (To record the sale) (To record the cost of inventory) e Textbook and Media List of Accounts Save for Later Attempts: 0 of 3 used Submit Answer (d) Compute gross profit using the perpetual system. Gross profit $