$4)$ Equipment was sold for S$50,000.$ The equipment was originally purchased for $$85,000.$ At the time of the sale, the equipment had accumulated depreciation of $$30,000.$ What is the amount of the gain or loss to be recorded on the sale of equipment?

$$Gain of $$20,000$

$$Loss of $$5,000$

$$Loss of $$35,000$

$$Gain of $$5,000$