How to display the Label of a Radio Field in a repeatable group field ?

Hi,
this is the code I am using, i am having the problem that I cannot display the label of the radio field : mthd_video_language (last line), the code displays the values 0, 1, 2 or 3, but I like to diplay the label which is english, german, french and italian, how can i achieve that ?

<?php
$groups = rwmb_meta( 'mthd_video_GRP' );
foreach ( $groups as $group ) {
    // Field mthd_video_title:
    echo $group['mthd_video_title'] ?? '';

    // Field mthd_short_video_dsc:
    echo $group['mthd_short_video_dsc'] ?? '';

    // Field mthd_video_upload:
    echo $group['mthd_video_upload'] ?? '';

    // Displaying videos with HTML5 player:
    $videos = $group['mthd_video_upload'] ?? '';

    if (is_array($videos) && !empty($videos)) { // Check if $videos is a non-empty array
        ?>
        <h3>Uploaded videos</h3>
        <ul>
            <?php foreach ( $videos as $video ) : ?>
                <li><video src="<?= $video['src']; ?>"></video></li>
            <?php endforeach ?>
        </ul>
        <?php
    }

    // Field mthd_video_url:
    echo $group['mthd_video_url'] ?? '';
    echo '<br>';

    // Field mthd_video_language:
    echo $group['mthd_video_language'] ?? '';
}
?>