I wanna use JQUERY to show and hide some fieldset inside a form in this way:

PSEUDOCODE: 

```
- if user-type == Company: show("company-fieldset")

- if user-type == Individual:
         - if individual-type == Freelancer: show("freelancer-fieldset")
         - if individual-type == Professor: show("professor-fieldset")
         - if individual-type == Student: show("student-fieldset")

```

I'm new in using JQUERY but I need a fast way to accomplish this thing, I'll really appreciate if you can help me. Please take into account that:
 I have to use radio buttons because they're mutual exclusive.
 Everytime I select a radio-button the form must update real time.
Thanks

HTML

```
<form method="POST">

  <fieldset class="main-fieldset">
    <input type="radio" id="user-type" value="company" checked>Company<br>
    <input type="radio" id="user-type" value="individual">Individual<br>
  </fieldset>

  <fieldset class="company-fieldset">
    <p>Company showed!</p>
  </fieldset>

  <fieldset class="individual-fieldset">
    <p>Individual showed!</p>
    <input type="radio" id="individual-type" value="freelancer" checked>Freelancer<br>
    <input type="radio" id="individual-type" value="professor">Professor<br>
    <input type="radio" id="individual-type" value="student" >Student<br>
  </fieldset>

  <fieldset class="freelancer-fieldset">
    <p>Freelancer showed!</p>
  </fieldset>

  <fieldset class="professor-fieldset">
    <p>Professor showed!</p>
  </fieldset>

  <fieldset class="student-fieldset">
    <p>Student showed!</p>
  </fieldset>

  <fieldset class="main-fieldset">
    <button type="button" onclick="alert('Hello World!')">SUBMIT</button>
  </fieldset>

 </form>

```

JS

```
$(document).ready(function() {

    $('#user-type').change(function() {

        var user_type = $(this).attr("value");

        if (user_type === "Company") {
            $('.company-fieldset').show();
            $('.freelancer-fieldset').hide();
            $('.professor-fieldset').hide();
            $('.student-fieldset').hide();
        }

        if (user_type === "Individual") {
            $('.company-fieldset').hide();
            if (user_type === "Freelancer") {
                $('.freelancer-fieldset').show();
                $('.professor-fieldset').hide();
                $('.student-fieldset').hide();
            }
            if (user_type === "Professor") {
                $('.freelancer-fieldset').hide();
                $('.professor-fieldset').show();
                $('.student-fieldset').hide();
            }
            if (user_type === "Student") {
                $('.freelancer-fieldset').dide();
                $('.professor-fieldset').hide();
                $('.student-fieldset').show();
            }
        }
    })
});

```