Need help with the journal entries for part $2$ of this question:

$1.$ record the year$-$end adjustment for inventory assuming the lower of cost or net realizable value $($LCNRV$)$ rule is applied to individual products.

$2.$ Record the year end adjustment for the inventory assuming the lower of cost or net realizable value $($LCNRV$)$ rule is applied to product categories.

$3.$ record the year$-$end adjustment for inventory assuming the lower of cost or net realizable value $($LCNRV$)$ rule is applied to total inventory.