On January 1, 2012, Janelle Corp. acquired a machine at a cost of $400,000. It is to be depreciated on the straight-line method over a five-year period with no residual value. Because of a bookkeeping error, no depreciation was recognized in Janelle's 2012 financial statements. The oversight was discovered during the preparation of Janelle's 2013 financial statements. Depreciation expense on this machine for 2013 should be

a. $0. b. $80,000. c. $100,000. d. $160,000.