Question 8 072 pts Die Hard Company purchases a machine at the beginning of the year at a cost of $60,000. The machine is depreciated using the straight-line method. The machine's useful life is estimated to be 4 years with a $5,000 salvage value. The book value of the machine at the end of year 4 is: $13.750. $55,000 $30,000 $5,000 $0