フリー問題

問題文

Two business units each run their own provider account and now need to share one customer index. Neither unit may read the raw records of the other unit, and both must be able to query the shared index. Which placement of the index meets both constraints?

選択肢

1. The index belongs inside a separate account exposing query interfaces for both units.
2. The index belongs inside a jointly mounted storage volume for both units.
3. The index belongs inside a primary unit account granting reciprocal roles for both units.
4. The index belongs inside a duplicated arrangement reconciling nightly copies for both units.