Choice "A" is correct. Under certain conditions a taxpayer may take a credit against its U.S. income tax for foreign income taxes paid.
Choice "d" is incorrect. The dividends-received deduction (not exclusion) reduces taxable income; it is not a tax credit.
Choice "b" is incorrect. State income taxes reduce taxable income; they are not tax credits.
Choice "c" is incorrect. Accelerated depreciation reduces taxable income; it is not a tax credit.