PHP print dropdown list and select from the middle by default

I have a dropdown list that works fine, but halfway through the list of 80 values is the one I want as selected by default

$cosOptions = cos_options();

Is the variable

<td><select name="options"><?php print $cosOptions; ?></select></td>

Prints the dropdown, then the function below.

function cos_options()
    $dbh = dbh_get();
    $options = '';

    $sql = 'select code, descr FROM cos';
    $stmt = $dbh->prepare($sql);
    while (true) {
        $r = $stmt->fetch();
        if (is_bool($r)) break;
        $options .= '<option value="' . $r['code'] . ' ' . $r['descr'] . '">' . $r['code'] . ' ' . $r['descr'] . '</option>';

    return $options;

The Postgres table only has two columns and 80 rows

code descr

D1 Pizza

D2 Bread

D3 Cornflakes etc,.

What I need is D43 Rice to be selected at first because 90% of the time it will be this. How can I achieve this? I’ve gone through a bunch of posts on here but can’t get it working.

Source: stackoverflow-php