Which statement about poetry is not correct A it must have stanzas B Each stanza has four lines C it must be full sentences D it must rhyme E all of these are incorrect?

None of these are correct. Poetry does not need to have stanzas. If it has stanzas, they can be any number of "lines". Lines do not need to be complete sentences. Just one Word can be a "line". Many poems do not rhyme. Rhyming can sound contrived at times, if not done properly. The only thing that is true about poetry is that it tells a point or story, though both can be shrouded in metaphors and similes.