Question 4 On December 31, 20x0, an entity purchases a crane at a cost of $3,000,000. The crane is being depreciated on the diminishing balance method at a 20% rate. The estimated residual value is $400,000. The estimated useful life of the crane is 15 years. During 20x6, it is determined that the straight-line method should have been applied since, contrary to initial estimates, the crane is generating revenues evenly over time. When the crane was purchased, it was expected to generate greater revenues initially with the revenues decreasing over time. You also estimate that the residual value should be $350,000 Explain what type of accounting change this represents and calculate the depreciation expense on the crane for the year ended December 31, 20x6