The following inventory information was taken from the records of Kleinfeld Inc. on December 31, 2020 Historical cost $12,000 Replacement cost $7,000 Expected selling Price $9,000 Expected selling cost $500 Normal profit margin 50% of price Assume that in February 2021, the expected selling price increases to $13,000 (all the rest of the facts are the same). What adjustment to inventory should be made under US GAAP in the preparation of the March 31, 2021 financial statements