现有 
    public class Parentt 
    public void change （int x）{）     ） 
    public class Child extends Parent{     ／／覆盖父类change方法     } 
    下列哪个声明是正确的覆盖了父类的change方法？（）    

A.  protected void change （int x）{}
B.  public void change（int x，  int y）{}
C.  public void change （int x）{}
D.  public void change （String s）{}