McNugget Games uses a periodic inventory system. The firm's records show the beginning inventory of gaming consoles on January $1,2023,$ and

the purchases of this item during the current year to be as follows:

A physical count indicates $200$ units of inventory at year$-$end.

Calculate the cost of ending inventory based on each of the following methods of inventory valuation:

a$.$ Average cost

b$.$ FIFO

c$.$ LIFO