$23-$ XYZ company is a store selling mobiles, the company has the following data regarding it purchases and sales of mobiles

February $1$: Purchased $100$ units at $$10$ cash

March $10$: Purchased $50$ units at $$12$ cash

April $20$: Purchased $30$ units at $$15$ cash

Throughout the year, sold a total of $80$ units

According to the data above data:

$-$ Calculate the ending inventory and cost of goods sold $($COGS$)$ using FIFO $($First$-$In$,$ First$-$Out$),$ and LIFO $($Last$-$In$,$ First$-$Out$)$

$-$ Give feedback on each method for calculating the ending inventory and cost of goods sold