year$-$end using the perpetual method and $($a$)$ first$-$in$,$ first$-$out, $($b$)$ last$-$in$,$ first$-$out, and $($c$)$ weighted$-$average cost method.

$\backslash$table$[[,$Units,Unit Cost$],[$Beginning Inventory, January $1,1,200,$$$58,],[$Purchases:$,$February $11,1,500,$$$59$