How do they get 44,000

The Novice Corporation purchased a machine for $80 000 on 1 January 2018. The machine is expected to have a useful life of 5 years, a residual value of zero, and a production capacity of 120 000 units before it is scrapped. The Novice Corporation uses the units-of-production method to calculate depreciation. For the year ending 31 December 2018, the depreciation was $16 000. The number of units produced during 2019 is 30 000. The carrying amount of the machine at 31 December 2019 is: All. (a) $16 000 (b) $20 000 (c) $30 000 (d) S44 000 (e) $60 000