Martin Company purchases a machine at the beginning of the year at a cost of $78,000. The machine is depreciated using the straight-line method. The machines useful life is estimated to be 5 years with a $4,000 salvage value. The book value of the machine at the end of year 5 is:

Multiple Choice

$14,800.

$74,000.

$31,200.

$4,000.

$0.