Final answer:
Neither high-income nor low-income taxpayers would prefer a $1,000 tax deduction over a $1,000 tax credit.
Step-by-step explanation:
The statement that is true is 'Neither 'a' nor 'b'. Both high-income taxpayers and low-income taxpayers would prefer a $1,000 tax credit over a $1,000 tax deduction. The reason is that a tax credit directly reduces the amount of taxes owed, while a tax deduction reduces the taxable income, resulting in a smaller reduction in taxes.