Pharoah Ltd. purchased a new machine on April 4, 2017, at a cost of $180,000. The company estimated that the machine would residual value of $16,000. The machine is expected to be used for 10,000 working hours during its four-year life. Actual maching was 1,500 hours in 2017; 2,200 hours in 2018:2,500 hours in 2019;2,000 hours in 2020; and 1,800 hours in 2021. Pharoah has December 31 year end. (a) Calctlate depreciation for the machine under each of the following methods: (Round expense per unit to 2 decimal places, e. 2.75 and final answers to 0 decimal places, e.g. 5.275.) (1) Straight-line for 2017 through to 2021 . (2) Diminishing-balance using double the straight-line rate for 2017 through to 2021. 2017expense$ 2018 expense $ 2019expense$2020expense$ 2021expense$ (3) Units-of-production for 2017 through to 2021. 2017expense$ Which method results in the highest depreciation expense over the life of the asset? Highest net income? Highest cash flow? Which method results in the highest net income? Which method results in the highest cash flow? Which method results in the highest depreciation ex st net income