Which of the following statements are true regarding the earned income credit?

Multiple select question.

Individuals with no qualifying children must be at least $21$ years old to claim the credit.

Individuals who are dependents of other taxpayers are not eligible for the credit.

The earned income tax credit is a nonrefundable tax credit.

The credit is designed to offset the effect of employment taxes on compensation paid to low$-$income taxpayers.

Individuals with at least one qualifying child are eligible for the credit regardless of age.