Red Corp. constructed a machine at a total cost of $50 million. Construction was completed at the end of 2017 and the machine was placed in service at the beginning of 2018. The machine was being depreciated over a 10-year life using the straight-line method. The residual value is expected to be $5 million. At the beginning of 2021, Red decided to change to the sum-of-the-years'-digits method. Ignoring income taxes, what will be Red's depreciation expense for 2021? (Do not round intermediate calculations. Round final answer to 2 decimal places.) Multiple Choice $4.50 million. $3.27 million. $7.88 million. $3.99 million