low port numbers

Which of the following Java code snippets can be used to identify applications running on low port numbers?

A. for (int i = 1; i < 1024; i++) {
    try {
        Socket s = new Socket("localhost", i);
        System.out.println("An Application is running on port number " + i );
    }catch (UnknownHostException ex) {
        break;
    }catch (IOException ex) {}
}  
 B. for (int i = 1024; i < 65536; i++) {
    try {
        Socket s = new Socket("localhost", i);
        System.out.println("An Application is running on port number " + i );
    }catch (UnknownHostException ex) {
        break;
    }catch (IOException ex) {}
}  
 C. for (int i = 1024; i < 65536; i++) {
    Socket s = new Socket();
    System.out.println("An Application is running on port number " + i );
}  
 D. for (int i = 1; i < 1024; i++) {
    Socket s = new Socket();
    System.out.println("An Application is running on port number " + i );
}  
 E. try {
    InetAddress theAddress = InetAddress.getByName("localhost");
    for (int i = 1; i < 1024; i++) {
        Socket s = new Socket(theAddress, i);
        System.out.println("An Application is running on port number " + i );
    }
}catch (UnknownHostException e) {
}catch (IOException e) {}

[BPSouther: Added code tags]
[ September 13, 2007: Message edited by: Ben Souther ]

arpita jain,
Welcome to JavaRanch.

If you take a look around, you'll see that we have different forums for different topics.
This one is for Servlet questions.

I'll move this to our Sockets and Internet Protocols forum for you.

Also, be aware, that multiple choice questions look a lot to us to be homework assignments or test questions. We don't answer homework questions here.
Why don't you tell us which you think the answer is and why.
If you're off, someone might point you in the right direction.
See:
http://faq.javaranch.com/java/DoYourOwnHomework
for more information.

Please QuoteYourSources.