You are going to buy a new bull dozer for your weekend business. The cost is $$300,000.$ The dozer has a useable life of $7$ years and will have a salvage value of $$90,000.$

Using straight line depreciation, what is the depreciation in year four? $($Not the total depreciation$).$

Group of answer choices

$$12,857$

$$120,000$

$$42,857$

$$30,000$