Given:Public abstract class Shape {Private int x;Private int y;Public abstract void draw();Public void setAnchor(int x,int y){This.x=x;This.y=y;}}Which two classes use the shape class correctly?
选项：

A:public class Circle implements Shape{ private int radius; }
B:public abstract class Circle implements Shape{ private int radius; }
C:public class Circle extends Shape{ private int radius; public void draw(); }
D:public abstract class Circle implements Shape{ private int radius; public void draw(); }
E:public class Circle extends Shape{ private int radius; public void draw();{/*code here*/} }
F:public abstract class Circle implements Shape{ private int radius; public void draw();{/*code here*/} }