Please answer all the parts.

23) The Petrowski Company uses the perpetual inventory system. The Pe Petrowski Company has the following datia available for the month of January Date Jan. 1 Jan. 9 Jan. 10 Jan. 15 Jan. 18 Jan. 24 Jan. 30 Transaction Beginning inventory Purchase Sale Purchase Sale Purchase Sale Unit Cost $100 $120 Units 100 300 200 400 300 100 10 $140 $160 of Goods Sold for January using the following methods: 1. Determine the Cost a. FIFO b. LIFO c. Moving-average (Round per unit costs and all other dollar amounts to two decimal places.)