PDO fetchAll not passing correct values to function

This is the challenge I've been set. I'm either doing something wrong or just not understanding the question. Please help.

The company you work for wants to send an email to its member base. They want the email to contain a complementary offer based on their membership level. We've included a helper.php file that contain the connection to the database and give us a PDO object $db to use. This helper file also contains a function to send_offer. The send_offer function accepts the following arguments: $member_id, $email, $fullname, $level In the current file, we've included the query to select the required items from the database. The results of the database query are stored in a PDOStatement object named $results. Loop through those results and pass them to the send_offer function.

<?php
include "helper.php";

try {
    $results = $db->query(
        "SELECT member_id, email, fullname, level FROM members"
    );
} catch (Exception $e) {
    echo $e->getMessage();
}
//add code below this line



foreach ($results->fetchAll(PDO::FETCH_ASSOC) as $thing) {
  $member_id = $thing['member_id'];
  $email = $thing['email'];
  $fullname = $thing['fullname'];
  $level = $thing['level'];
}

send_offer($member_id, $email, $fullname, $level);