HElp me please....

ACES Company acquired and retails a certain product X. At the end of the year, it was found that they had on hand 12 units of inventory. The following data exist: Jan 1 Beginning Inventory 10 units @ P10.00 Mar 13 Purchases 15 units @ P11.50 Aug 8 Purchases 20 units @ P12.50 Nov 16Purchases 10 units @ P12.00 Determine CGS and Ending Inventory using the following methods: (a) Specific Invoice (given that 6 units of the Aug purchase and 6 of the Nov purchase are left) (b) Average Cost (c) FIFO (d) LIFO