What value will be sent back to the server in the query string?

<form method="GET" action="form2.php">
  <select name="brand">
    <option>Apple</option>
    <option >Samsung</option>
    <option>OnePlus</option>
  </select>
  <select name="model">
    <option value="1">S21</option>
    <option value="2" >Note 20</option>
    <option value="3">S20</option>
  </select>
  <input type="submit" value="send">
</form>