I can't work out how to make this upload as 'reduced redundancy'

Iv added it in there twice, but it doesn't do anything. I think the way I have applied is useless.

I think i need to use this line but it seems i need to rebuild this?

`setOption('StorageClass', 'REDUCED_REDUNDANCY')`

```
require_once __DIR__ .'/vendor/autoload.php';

$options = [
    'region' => $region,
    'credentials' => [
        'key' => $accessKeyId,
        'secret' => $secretKey
    ],
    'version' => '2006-03-01',
    'signature_version' => 'v4',
    'StorageClass' => 'REDUCED_REDUNDANCY',
];

$s3Client = new \Aws\S3\S3Client($options);

$uploader = new \Aws\S3\MultipartUploader($s3Client, $filename_dir , [
    'bucket' => $bucket,
    'key'    => $filename,
    'StorageClass' => 'REDUCED_REDUNDANCY',
]);

try {
    $result = $uploader->upload();
    echo "Upload complete: {$result['ObjectURL']}\n";
} catch (\Aws\Exception\MultipartUploadException $e) {
    echo $e->getMessage() . "\n";
}

```