Company X uses FIFO for internal purposes, but LIFO for external reporting purposes. At the beginning of the year, the LIFO reserve was $20,000. At the end of the year, the LIFO reserve was $23,000. The end of year LIFO inventory balance for external reporting purposes was $40,000. What was the end of year FIFO inventory balance? $60,000 O $43,000 O $63,000 O $3,000