A new project requires a $50,000 investment in a new machine. The machine costs $10,000 to ship and install, and will require an additional $5,000 invest working capital. The project is expected to last for four years, and the capital expenditure is depreciated using straight-line depreciation. If the project is a years, what would the remaining book value of the capital expenditure be?

$30,000 $55,000 $32,500 $25,000