Answer:
$1.3 million
Explanation:
Under FIFO costing:
Cost of goods sold = $22 billion
Inventory = $2.1 billion
LIFO Reserve for year-end 2018 = $0.6 billion
At year-end 2019 it had increased to $0.8 billion
Ending inventory (LIFO) = Ending inventory (FIFO) - Ending period LIFO reserve
= $2.1 billion - $0.8 billion
= $1.3 million