Computing LIFO Liquidation

Heiden Inc. accounts for inventory using the LIFO inventory method. Beginning inventory on January 1 consists of 28,000 units at a cost of $5 per unit. During the year, the company sold more items than purchased, causing the ending inventory balance on December 31, 2020, to drop to 21,000 units. Assuming a tax rate of 40%, and a current replacement cost of inventory of $8 per unit, what is the LIFO liquidation effect on pretax and after-tax income?

LIFO liquidation effect on pretax income
LIFO liquidation effect on after-tax income