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 $24$ $ $104$ $ $77$

Stock B $299371$

Stock C $27118143$

Hard drives

Stock X $37198173$

Stock Y $64174207$

CD burners

Stock D $968964$

Stock E $218127157$

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.