Mohr Company purchases a machine at the beginning of the year at a cost of $47,000. The machine is depreciated using the double-declining-balance method. The machine's useful life is estimated to be 5 years with a $7,000 salvage value. The machine's book value at the end of year 2 is:

• $24,000.
• $13,600.
• $18,800.
• $16,920.
• $28,200