This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mycobacterial Diseases (TB, Leprosy and MAC), Subject name: Pharmacology
[{'content': 'XDR-TB is defined as:- \nSelect and explain. \nA. MDR-TB, B. MDR - TB + resistance to any of injectable 2nd line drugs, C. MDR - TB + resistance to any of fluoroquinolones, D. MDR - TB + resistance to any of fluoroquinolones + resistance to any of injectable 2nd line drugs', 'role': 'user'}, {'content': 'Answer: D \nExplanation: TYPE RESISTANCE TO Mono drug resistance Any one of H, Z and E Poly drug resistance Any two or all 3 of H, Z and E Rifampicin resistance R with or without other drugs except H Multi drug resistance (MDR) H and R Extensive drug resistance (XDR) H and R + any of FQ + any of injections', 'role': 'assistant'}]