Under HIPAA$$s Privacy Rule, when an individual requests her own protected health information $($PHI$),$ a covered entity must disclose the PHI within $30$ days. A hypothetical state legislature passes a law that gives covered entities $60$ days to disclose PHI when requested by the subject of the PHI. Which of the following is true?

a$.$ Covered entities in the state must disclose the PHI within $30$ days

b$.$ The state law would control, so covered entities would have $60$ days to respond.

c$.$ Covered entities must inform the Department of Health and Human Services whether they will follow federal or state law and then act accordingly.

d$.$ To reconcile the federal and state laws, the covered entities would have $45$ days to disclose the PHI.