72) Match List I with List II :
List I (Optical Amplifiers)
- (A) PDFA
- (B) TDFA
- (C) EDFA
- (D) Gain shifted EDFA
List II (Operating band)
- (I) S-band
- (II) C-band
- (III) L-band
- (IV) O-band
Choose the correct answer from the options given below :