Given a correctly compiled class whose source code is： 
package com.sun.sjcp； 
public class Commander { 
public static void main（String[] args） { 
// more code here 
} 
} 
Assume that the class file is located in /foo/com/sun/sjcp/， the current directory is /foo/， and that the classpath contains “.“ （current directory）. Which command line correctly runs Commander？（） 

11. public class Counter { 
12. public static void main（String[] args） { 
13. int numArgs = /* insert code here */； 
14. } 
15. } 
and the command line： java Counter one fred 42 Which code， inserted at line 13， captures the number of arguments passed into the program？（） 

1. interface DoStuff2 { 
2. float getRange（int low， int high）； } 
3. 
4. interface DoMore { 
5. float getAvg（int a， int b， int c）； } 
6. 
7. abstract class DoAbstract implements DoStuff2， DoMore { } 
8. 
9. class DoStuff implements DoStuff2 { 
10. public float getRange（int x， int y） { return 3.14f； } } 
11. 
12. interface DoAll extends DoMore { 
13. float getAvg（int a， int b， int c， int d）； } 
What is the result？（） 

interface DeclareStuff{ 
public static final int EASY = 3； 
void doStuff（int t）； } 
public class TestDeclare implements DeclareStuff { 
public static void main（String [] args） { 
int x=5； 
new TestDeclare（）.doStuff（++x）； 
} 
void doStuff（int s） { 
s += EASY + ++s； 
System.out.println（”s “ + s）； 
} 
} 
What is the result？（）