private String s;

public void m1(){s="toto";}

}

public class B extends A{

private int i;

public void m1(){super.m1();m2();}

public void m2(){i=42;}

public void m3(){m2();}

}

public class C extends B{

public void m3(){m4();}

public void m4();

}

Quelles affirmations sont correctes ?