Which of the following situations will result in recognizing a gain on sale of a plant asset?

Multiple choice question.

A fully depreciated asset is sold for $$1,000.$

An asset with a book value of $$2,000$ is sold for $$1,500.$

An asset that cost $$5,000$ with accumulated depreciation of $$3,000$ is sold for $$1,500.$

An asset with book value of $$2,000$ is sold for $$2,000.$

A fully depreciated asset is discarded.