How to remove option in select when selecting?

Question

JavaScript

I would like to know how to remove the select option'y when choosing.
That is 3 select'а in which 3 identical option.
It is necessary that when an option is selected in one select in another, it disappears.
So that there is no 2nd choice of the same option.

Answer 1

So?

<select class="sel">
  <option class="opt1">Option 1</option>
  <option class="opt2">Option 2</option>
  <option class="opt3">Option 3</option>
</select>
<select class="sel">
  <option class="opt1">Option 1</option>
  <option class="opt2">Option 2</option>
  <option class="opt3">Option 3</option>
</select>
<select class="sel">
  <option class="opt1">Option 1</option>
  <option class="opt2">Option 2</option>
  <option class="opt3">Option 3</option>
</select>

$('.sel').on('change', function() {
  $('.sel').not(this).find('.' + $(':selected', this).attr('class')).remove();
});