It's 4A. Even if they were 4B (or even unclassified) before Addanaya accidentally created her portal, the first priority of the Precinct would have been to begin monitoring her world once they learned of her discovery, even before they tapped her as an agent.
"Tell you what, Leto, I won't fight with you. Zeus' wives are pretty tough customers. You have my permission to boast openly that you have beaten the daylights out of me."
-Hermes, the Iliad (Stanley Lombardo, translator) Book 21