An example of tax credit is illustrated when someone's total income tax bill is reduced from $6,000 to $3,000.
This is a kind of special incentive that allows some taxpayers to subtract the amount of the credit they have accrued from the total they owe the state.
Hence, when the total income tax bill is reduced from $6,000 to $3,000, it is an example of tax credit.
Therefore, the Option B is correct.
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