フリー問題

問題文

A key is absent from the set of texts chosen for a visitor's region and the lookup still returns a string. Where did that string come from?

選択肢

1. The string came from a copy cached by its caller for that family.
2. The string came from a parent standing directly above it for that family.
3. The string came from a default written into its class for that family.
4. The string came from a table shipped with its own platform for that family.