$$ Cost flow methods

The following three identical units of Item P$401$C are purchased during April:

Assume that one unit is sold on April $27$ for $$158.$

Gross Profit Ending Inventory

a$.$ First$-$in$,$ first$-$out $($FIFO$)$

b$.$ Last$-$in$,$ first$-$out $($LIFO$)$

c$.$ Weighted average cost