Question 83 : method Overriding

Given:

public class GoTest {
public static void main( String[] args ) {
Sente a = new Sente(); a.go();
Goban b = new Goban(); b.go();
Stone c = new Stone(); c.go();
}
}

class Sente implements Go {
public void go() { System.out.println("go in Sente"); }
}

class Goban extends Sente {
public void go() { System.out.println("go in Goban"); }
}

class Stone extends Goban implements Go { }

interface Go { public void go(); }

What is the result ?

A. go in Goban
go in Sente
B. go in Sente
go in Goban
C. go in Sente
go in Goban
D. go in Goban
go in Sente
E. Compilation fails because of an error in line 17.