B
The fact this is all "confirmed" yet the spoiler thread isn't open is suspicious.
I remember "the Straw Hats sail away with Caribou on the Sunny"
I remember "the Straw Hats sail away with Caribou on the Sunny"
trust me
he's being fed info by eten
he might not know the specifics but he knows that Yamato won't join because eten told him because eten's source told her