Ayres services acquired an asset for $112 million in 2018. the asset is depreciated for financial reporting purposes over four years on a straight-line basis (no residual value). for tax purposes the asset’s cost is depreciated by macrs. the enacted tax rate is 40%. amounts for pretax accounting income, depreciation, and taxable income in 2018, 2019, 2020, and 2021 are as follows: ($ in millions) 2018 2019 2020 2021 pretax accounting income $ 410 $ 430 $ 445 $ 480 depreciation on the income statement 28.0 28.0 28.0 28.0 depreciation on the tax return (33.0 ) (41.0 ) (23.0 ) (15.0 ) taxable income $ 405 $ 417 $ 450 $ 493 required: determine (a) the temporary book–tax difference for the depreciable asset and (b) the balance to be reported in the deferred tax