Given the following for the Illinois Company. Event Date 7/1/13 Purchase Machine 5/1/14 Addition to Machine Extends useful life to 7/1/21 Cost: $16,400 6 year life straight-line Cost: $4,000 No change in salvage Depreciation expense for year-end 12/31/14 is approximately: Select one: Salvage: $2,000 O a. $2,512 O b. $2,326 O c. $2,596 O d. $2,857 O e. $2,523