请说出E类中System.out.println的输出结果。class A { double f(int x,double y) { return x+y; } int f(int x,int y) { return x*y; }}public class E { public static void main(String args[]) { A a=new A(); System.out.println(a.f(10,10)); System.out.println(a.f(10,10.0)); }}
选项：

A:10020;
B:100.020;
C:10020.0;
D:100.020.0