フリー問題

問題文

A module declaration needs to let other modules use the types in one of its packages, and it also depends on another module. Which pair of directives expresses that?

選択肢

1. requires names the package that other modules may use, and exports names the module depended on.
2. exports names the package that other modules may use, and requires names the module that this module depends on.
3. opens names the package that other modules may use, and requires transitive names the module that this module depends on.
4. exports names both the package and the module using it, and requires is for optional dependencies.