What is the result?

Answer: B
package q068;

public class SumTest {
public static void doSum(Integer x, Integer y){
System.out.println(“Integer sum is “+(x + y));
}
public static void doSum(double x, double y){
System.out.println(“double sum is “+(x + y));
}
public static void doSum(float x, float y){
System.out.println(“float sum is “+(x + y));
}
public static void doSum(int x, int y){
System.out.println(“int sum is “+(x + y));
}
public static void main(String[] args) {
doSum(10, 20);
doSum(10.0, 20.0);
}
}
/* Output
int sum is 30
double sum is 30.0
*/