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For 2022, determine the deductible charitable contribution in each of the following instances: Required: a. Charitable contribution of $4,000 and taxable income before charitable contribution of $50,000. b. Charitable contribution of $8,000 and taxable income before charitable contribution of $50,000. c. Charitable contribution of $4,800 and taxable income before charitable contribution of $50,000. Taxable income includes a net operating loss carryforward of $5,000. d. Charitable contribution of $4,800 and taxable income before charitable contribution of $40,000. Taxable income includes a capital loss carryback of $5,000. Answer is complete but not entirely correct