The difference between a refundable credit and a nonrefundable credit is which of the following?

Group of answer choices

A nonrefundable credit can only reduce a taxpayer's tax liability to zero.

Refundable tax credits are only available to individual taxpayers.

A refundable credit can only reduce a taxpayer's tax liability to zero.

Nonrefundable tax credits are only available to corporations.

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Which of the following are below the line income tax deductions?

Medical expenses

Student loan interest

Contributions to an IRA

Charitable contributions

a) 1 and 3

b) 1, 2, 3, and 4

c) 1 and 4

d) 1, 2, and 3