The written myths that came out of ancient greece are interpretative. different poets have different versions of the same events.
a. true
b. false

This is true. Poets take the same elements and characters and make different stories or give different perspectives. It's done even in modern times, for example, Borges wrote about the Minotaur that Theseus defeated from the perspective of the Mintoaur which broadens your perspective and gives him character.

Iwould say d) signed unknown street singers who brought original songs to record.

Cthe lindisfarne gospels