Which of the following is a correct statement regarding the Religious Freedom Restoration Act $($RFRA$)?$

Select one:

a$.$ It does not apply to actions by the federal government.

b$.$ It does not apply to actions by state governments.

c$.$ It holds that the federal government may, as a statutory matter, substantially burden a person's exercise of religion.

d$.$ In instances where a generally applicable federal law substantially burdens the exercise of religion, the government must satisfy the rational basis test.