フリー問題

問題文

A persistent field of an entity holds a collection of basic classes and carries the element collection annotation. When may the team drop the target class element, and which pair of attributes does that annotation own?

選択肢

1. The target class element may be dropped when the loading is eager, and the pair of attributes on that annotation is the target class and the fetch mode
2. The target class element may be dropped when generics define it, and the pair of attributes on that annotation is the target class and the cascade option
3. The target class element may be dropped when the loading is eager, and the pair of attributes on that annotation is the target class and the cascade option
4. The target class element may be dropped when generics define it, and the pair of attributes on that annotation is the target class and the fetch mode