I have set up a multiple drop down menu. Is there a way to deactivate option "C" when both "A" and "B" are chosen at the same time? Also, how can I add a button that resets the selected value to "-Gender-" and reload the default chart? It would be greatly appreciated if you could demonstrate with a fiddle example!
<select id="list" name="list" multiple="multiple">
<option select disabled>-Gender-</option>
<option value="A">Female</option>
<option value="B">Male</option>
<option value="C">Both</option>
</select>