The information shown below relating to the ending inventory was taken at lower of cost or NRV from the records of Electronics Corp.:

Per Unit

Inventory Classification Quantity Cost NRV

Keyboards

Stock A $17$ $ $100$ $ $80$

Stock B $228166$

Stock C $20104122$

Hard drives

Stock X $30206188$

Stock Y $50183209$

CD burners

Stock D $827860$

Stock E $211127150$

Required:

$1-$a$.$ Determine the valuation of the above inventory at cost by individual items.

$1-$b$.$ Determine the valuation of the above inventory at cost assuming application of lower$-$of$-$cost$-$or$-$NRV by classifications.

$2.$ Prepare the entry to record the writedown, if any, to reduce ending inventory to lower of cost or NRV$.$ Assume periodic inventory and the allowance method. $($If no entry is required for a transaction$/$event$,$ select $"$No journal entry required" in the first account field.$)$