Pixel Ltd. is a retailer operating in Baliwag, Bulacan. Pixel uses the perpetual inventory method. All sales returns from customers result in the goods being returned to inventory; the inventory is not damaged. Assume that there are no credit transactions; all amounts are settled in cash. You are provided with the following information for Pixel Ltd. for the month of January 2021. Unit Cost or Date Description Quantity Selling Price December 31 Ending inventory 150 P17 January 2 Purchase 100 21 January 6 Sale 150 40 January 9 Sale return 10 40 January 9 Purchase 75 January 10 Purchase return 15 January 10 Sale 50 January 23 Purchase 100 January 30 Sale 110 22420 45 28 50 Question (a) Using FIFO calculate the cost of goods sold. Question (b) Using FIFO calculate the cost of ending inventory. Question (c) Using FIFO calculate the gross profit. (Sample answer: 1,000 No Peso Sign, No Letters, No Decimal)