Correct option is C
The treatment duration for Multi-Drug Resistant Tuberculosis (MDR-TB) is at least 20-24 months. MDR-TB is resistant to Isoniazid and Rifampicin, the two most effective TB drugs, requiring longer treatment with second-line medications.
Explanation of Each Option:
· 6-8 months: Too short; insufficient for MDR-TB treatment.
· 12 months: Not enough for complete treatment; may lead to relapse or failure.
· 20-24 months: Correct answer; WHO recommends a longer treatment period for MDR-TB.
· 24-27 months: Some severe cases may require extended treatment, but standard therapy lasts 20-24 months.