On October 1, 2017, Crane Company places a new asset into service. The cost of the asset is $500000 with an estimated 4-year life and $20000 salvage value at the end of its useful life. What is the book value of the plant asset on the December 31, 2017, balance sheet assuming that Crane Company uses the double-declining-balance method of depreciation?

$480000.

$417500.

$437500.

$468750.