Click the Exhibit button. Which state

Click the Exhibit button. Which statement is true about the classes and interfaces in the exhibit?（）

• ACompilation will succeed for all classes and interfaces.
• BCompilation of class C will fail because of an error in line 2.
• CCompilation of class C will fail because of an error in line 6.
• DCompilation of class AImpl will fail because of an error in line 2