Oahu Kiki tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each month, as if it uses a periodic inventory system. Assume Oahu Kiki's records show the following for the month of January. Sales totaled $330$ units.

$\backslash$table$[[,$Date,Units,Unit Cost,Total Cost$],[$Beginning Inventory,January $1,300,$$$90,$$$27,000$

$1)$ Calculate The number and cost of goods available for sale

$2)$ calculate the number of units in ending inventory

$3)$ calculate the cost of ending inventory and cost of good sold using the A$)$ FIFO, B$)$ LIFO, and C$)$ weighted average cost methods