B
I don't really get this though, Akainu says this is "everything", but Vegapunk is leaving a lot of details out - does Akainu really just coincidentally know exactly the same info as Vegapunk/the Oharans got from their research? Wouldn't he know more if he got informed by the Gorosei of the Void Century?

It's not: "You're spilling all the beans, you mad geezer."
It's more: "You're saying anything and everything. Them balls on you, apple-headed fool."