jQuery event when select option

<select id='list'>
<option value='1'>Option A</option>
<option value='2'>Option B</option>
<option value='3'>Option C</option>
</select>

<script>
$(document).ready(function(){
$('#list').change(function() {
    if ($(this).val() === '2') {
        // Do something for option "b"
    }
});
});
</script>