フリー問題

問題文

A vendor's paid extension stops loading after the open base product changes an internal function signature in a minor release. The extension was never listed as a supported consumer of that function. What was relied on, and what would have prevented the break?

選択肢

1. What was relied on was the documented public interface, and the break is prevented by the stricter coding standard.
2. What was relied on was the undeclared internal function, and the break is prevented by the stated extension interface.
3. What was relied on was the documented public interface, and the break is prevented by the stated extension interface.
4. What was relied on was the undeclared internal function, and the break is prevented by the stricter coding standard.