What is gain$/$ loss recognized when a piece of equipment costing $$9,000$ with an estimated salvage value of $$600$ and useful life of $3$ years is sold for $$2,400$ at the end of year $2?$

A$.$ $$2,400$ Loss

B$.$ $$1,000$ Gain

C$.$ $$2,400$ Gain

D$.$ $$1,000$ Loss