On April 1, 2020, a truck was purchased for $80,000. The truck had a salvage value of $6,000 and an estimated useful life of 8 years. Management estimates that the truck will travel 390,000 km over its entire life. Management would like you to calculate depreciation expense using the three following methods. 1. Straight line depreciation, for the year ended Dec. 31, 2020. 2. Double declining balance depreciation for the year ended Dec. 31, 2020 and 2021. 3. Units of production depreciation for 2020 assuming 50,000 km were actually driven between April 1, 2020 and December 31, 2020.