The Old Ice Cream Shop Co. makes ice cream. On April 1, 2021, the company purchased a high-tech ice-cream making uchine for $160,000. Details on the machine are as follows: The estimated useful life is 10 years. The estimated residual value is $10.000 The total estimated output over the machine's useful life is 50,000 pounds of ice cream The machine produced 4.000 pounds of ice cream in 2021 and 9.000 pounds in 2022 Required: Compute depreciation expense on the machine for both 2021 and 2022 using the following methods: a. Straight-line method [2 marks) b. Units-of production method [2 marks] c Double-diminishing balance method [2 marks]