Which statement is true about the classes and interfaces？（） 
- A、Compilation will succeed for all classes and interfaces.
- B、Compilation of class C will fail because of an error in line 2.
- C、Compilation of class C will fail because of an error in line 6.
- D、Compilation of class AImpl will fail because of an error in line 2.
正确答案:C
答案解析:有
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