<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="container">
<p><h1>Select Icon Option</h1></p>
<select class="form-control">
<option> fa fa-car </option>
<option> fa fa-address-book</option>
<option> fa fa-ambulance</option>
<option> fa fa-angellist</option>
</select>
</div>