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

Lower of Cost or NRV Adjustments write down/up

Inventory Classification Quantity Per unit cost NRV By item By group By item By group

Keyboards

Stock A 12 $94 $80

Stock B 20 76 70

Stock C 18 100 110

Hard drives

Stock X 30 180 170

Stock Y 60 160 180

CD Burners

Stock D 60 76 66

Stock E 200 100 116

Determine the valuation of the above inventory cost and at lower of cost or NRV, assuming apllication of lower of cost or NRV by a) individual items, and b) classifications