4) Isaac Inc. began operations in January 2021. For some property sales, Isaac recognizes income in the period of sale for financial reporting purposes. However, for income tax purposes, Isaac recognizes income when it collects cash from the buyer's installment payments. In 2021, Isaac had $600 million in sales of this type. Scheduled collections for these sales are as follows: 2021 2022 2023 2024 2025 $ 60 million 120 million 120 million 150 million 150 million $ 600 million Assume that Isaac has a 25% income tax rate and that there were no other differences in income for financial statement and tax purposes. Ignoring operating expenses, what deferred tax liability would Isaac report in its year-end 2021 balance sheet? A) $18 million. B) $112.5 million. C) $135 million D) $540 million