Below are four independent, material and unrelated situations involving accounting changes. Each change occurs during 2020 before any adjusting or closing entries were prepared. Assume a tax rate of 40% and any tax effects are adjusted through the deferred tax asset or liability account. Discuss and evaluate the type of accounting change, briefly describe any steps that should be taken to appropriately report the situation and complete journal entries to document the change.

B. At the beginning of 2015, Nicole Corp. purchased office equipment at a cost of $1,200,000. Its useful life was estimated to be ten years with no salvage value. The equipment has been depreciated by the sum-of-the-years digits method. On January 1, 2020, the company changed to the straight-line method.