Compilation fails because of an error in line 3.
Compilation fails because of an error in line 7.
Compilation fails because of an error in line 9.
If you define D e = new E(), then e.bMethod() invokes the version of bMethod()defined in Line 5.
If you define D e = (D)(new E()),then e.bMethod() invokes the version of bMethod() defined in Line 5.
If you define D e = (D)(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 9.