Read the following passage and answer the question.

[C]arry your well-planed oar until you come
to a race of people who know nothing of the sea,
whose food is never seasoned with salt, strangers all
to ships with their crimson prows and long slim oars,
wings that make ships fly.

Who says this and why?

Tiresias is telling Odysseus how to appease Poseidon.
Tiresias is telling Odysseus how to appease Helios if his men kill the cattle.
Circe is telling Odysseus how to summon the dead.
Nausicaa is telling Odysseus the way to Alcinous's castle.