Cost flow methodsThe following three identical units of Item P$401$C are purchased during April:DateItem BetaUnitsCostApr. $2$Purchase$1$$$314$Apr. $15$Purchase$1318$Apr. $20$Purchase$1322$ Total $3$$$954$ Average cost per unit $($$$954-$: $3$ units$)$ $$318$Assume that one unit is sold on April $27$ for $$417.$Determine the gross profit for April and ending inventory on April $30$ using the $($a$)$ first$-$in$,$ first$-$out $($FIFO$)$; $($b$)$ last$-$in$,$ first$-$out $($LIFO$)$; and $($c$)$ weighted average cost method.Line Item DescriptionGross ProfitEnding Inventorya. First$-$in$,$ first$-$out $($FIFO$)$$fill in the blank $1$$fill in the blank $2$b$.$ Last$-$in$,$ first$-$out $($LIFO$)$$fill in the blank $3$$fill in the blank $4$c$.$ Weighted average cost$fill in the blank $5$$fill in the blank $6$