19. Assume that the company uses the sum-of-years method for depreciation expense, find the accumulated depreciation balance in 31/12/2019 after calculation the depreciation expense for 2019: (2 points) O 12534 o 7857 O 6548 0 14405 8. Company "A" has a car. The cost of the car in 1/12/2018 is 30,000. Its estimated useful life is 6 years. The estimated salvage value is 2,500s. The productive life is 300,000 hours. Based on the information above, please solve question 18,19,20, and 21