将下列哪个代码放入程序中标注的【代码】处将导致编译错误?class A { public float getNum() { return 3.0f; } } public class B extends A { 【代码】}
A: public float getNum(){return 4.0f;}
B: public void getNum(){ }
C: public void getNum(double d){ }
D: public double getNum(float d){return 4.0d;}