Marigold Marina has a September 30 year end. On August 1, 2021, it purchased a new marine crane to assist it with the autumn pull out of the boats in the marina. The physical life of the crane is expected to be 15 years, but Marigold plans to keep the crane for only 10 years as this represents the assets useful life to the company and at which point they will trade it in for a newer model. The original cost of the crane is $57600. The amount of depreciation that Marigold should show in its financial statements for the year ended September 30, 2021 is

$5760.

$3840.

$960.

$640.