The correct option is
B Antibiotics
Treatment usually combines several antibiotics that you take for 6 to 12 months. It's important that you take medicine on time every day. If one stops taking the medicine before the end of treatment, they risk having TB return. TB that returns may be resistant to drugs used to treat it. This makes it much more difficult to cure. If having a positive skin test for TB, but no other signs of the disease, the doctor may ask to take an antibiotic for 9 months to kill any TB bacteria in the body and prevent the development of active TB in the future.
So, the correct answer is 'Antibiotics'.