39. Which method placed at line 6 will cause a compiler error?
1. class Super{
2. public float getNum(){return 3.0f;}
3. }
4.
5. public class Sub extends Super{
6.
7. }
Select 1 correct answer:
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;}