Answer and Explanation:
A. December 31, 2019
$83,520- $68,160
=$15,360
Dr cost of goods sold $15,360
Cr To allowance to reduce inventory to lower of cost $15,360
December 31, 2020
$96,000-$94,080
=$1,920
Dr To allowance to reduce inventory to lower of cost $1,920
Cr Cost of goods sold $1,920
B.
December 31, 2019
$83,520- $68,160
=$15,360
Dr Loss due to decline of inventory to lower of cost
$15,360
Cr Allowance to reduce inventory to lower of cost $15,360
December 31, 2020
$96,000-$94,080
=$1,920
Dr To allowance to reduce inventory to lower of cost $1,920
Cr Inventory loss $1,920
C. Both Cost of goods sold methods and the Loss method have the same effect on net income.