有如下程序段: public class Parent public int addValue (int a,int b) int s; s=a+b; return 3; class Child extends Parent 则下列选项中,可以正确加入类Child中且父类的方法不会被覆盖的是( )。
A.int addValue (int a,intb) //do something...
B.public void addValue() //do something...
C.public int addValue (int a,intb)throws MyException //do something...
D.public float addValue (int a,int b,float b=1.0) //do someting...