The Nurse Is Caring for a 30-Year-Old American Indian Female

The nurse is caring for a 30-year-old American Indian female who is taking Rifater,a drug containing rifampin,isoniazid,and pyrazinamide.The patient asks how long she will have to take the medication.Which response explains when the patient may discontinue the medication?

A) When the sputum culture comes back negative
B) When the medication has been taken for 9 months
C) When three consecutive sputum cultures are negative
D) When the tuberculin skin test (TST) is no longer positive