单选题Given a class Repetition： 1.package utils； 2. 3.public class Repetition{ 4.public static String twice（Strings）{returns+s；} 5.} and given another class Demo： 1.//insert code here2. 3.public class Demo{ 4.public static void main（String[]args）{ 5.System.out.println（twice（"pizza"））； 6.} 7.} Which code should be inserted at line 1 of Demo.java to compile and run Demo to print“pizzapizza”？（）Aimport utils.*；Bstatic import utils.*；Cimportutils.Repetition.*；Dstatic importutils.Repetition.*；Eimport utils.Repetition.twice（）；Fimport static utils.Repetition.twice；Gstatic import utils.Repetition.twice；
单选题
Given a class Repetition： 1.package utils； 2. 3.public class Repetition{ 4.public static String twice（Strings）{returns+s；} 5.} and given another class Demo： 1.//insert code here2. 3.public class Demo{ 4.public static void main（String[]args）{ 5.System.out.println（twice（"pizza"））； 6.} 7.} 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
importutils.Repetition.*；
D
static importutils.Repetition.*；
E
import utils.Repetition.twice（）；
F
import static utils.Repetition.twice；
G
static import utils.Repetition.twice；
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