Which code should be inserted at line 1 of Demo.java to compile and run Demo to print pizzapizza?

Given a class Repetition:

1. package utils;
2.
3. public class Repetition {
4. public static String twice(String s) { return s + s; }
5. }

and given another class Demo:

1. public class Demo {
2. public static void main(String[] args) {
3. System.out.println(twice(“pizza”));
4. }
5. }

Which code should be inserted at line 1 of Demo.java to compile and run Demo to print pizzapizza?

A.
import utils.*;

B.
static import utils.*;

C.
import utils.Repetition.*;

D.
static import utils.Repetition.*;

E.
import utils.Repetition.twice();

F.
import static utils.Repetition.twice;

G.
static import utils.Repetition.twice;

Explanation: