IUI IVIdICII.

$3.$ Compute the cost assigned to ending inventory using $($a$)$ FIFO, $($b$)$ LIFO, $($c$)$ weighted average, and $($d$)$ specific identification. For specific identification, units sold include $80$ units from beginning inventory, $340$ units from the March $5$ purchase, $40$ units from the March $18$ purchase, and $120$ units from the March $25$ purchase.