Which one of the following pairs of animals comprises 'jawless fishes'?

Jawless vertebrates form the group Agnatha, with the single living class Cyclostomata.
Cyclostomes have a sucking, circular mouth without jaws, and no scales or paired fins. Examples: $Petromyzon$ (lamprey) and $Myxine$ (hagfish).
Guppies, eels, mackerels and rohu are bony fishes (Osteichthyes) with jaws.
Hence the pair of jawless fishes is lampreys and hag fishes.