Which two classes use the Shape class correctly?A. public

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Which two classes use the Shape class correctly?


A. public class Circle implements Shape 
   {
    private int radius;
   }

B. public abstract class Circle extends 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 */ 
     }
   }

1. C,E
2. T,H
3. A,C
4. B,E
5. None of these

Correct Option: D

If one is extending any class, then they should use extends keyword not implements.