XDR-TB is defined as Resistance to:
INH plus rifampicin
Fluoroquinolones plus INH plus amikacin
Fluoroquinolones plus rifampicin plus kanamycin
Fluoroquinolones plus INH plus rifampicin plus amikacin
Ans. is. 'd' i. e., Fluoroquinolones plus INH plus rifampicin plus amikacin