multilevel inhertence

package start;

class A { protected void a() //a method in A { System.out.println("Class A"); } }

class B extends A { public B() { super();

}
  public void a()
  {
      super.a();
         System.out.println("Class B");    //A's a method overridden in B
  }

}

class C extends B {

public void a()                     //B's a method overridden in C
  {
    super.a();
         System.out.println("Class C");
  }

}

public class M {

        public static void main(String arg[])
        {

             //Creating a oblect of C
             C oC=new C();

             oC.a(); 

             //My Question = How to call A's in main an dont wanna print B an C???
        }

}