public function __construct(
       MagentoCatalogModelProductOption $option
    )

{
     $this->option = $option;
}


    $valuesArray = array();
    //add as many options you want, here we add two
    $valuesArray[] = array(
        "title"       => "Option1",
        "price_type"  => "fixed",
        "price"       => 9.99,
        "sku"         => $product->getSku(),
        "sort_order"  =>; 1,
    );
    $valuesArray[] = array(
        "title"       => "Option2",
        "price_type"  => "fixed",
        "price"       => 1.99,
        "sku"         => $product->getSku(),
        "sort_order"  => 2,
    );
    //now we create options and set type
    $options[] = array(
        "sort_order"    => 1,
        "title"         => "Options",
        "type"          => "radio",
        "is_require"    => 1,
        "values"        => $valuesArray,
    );
    $product->unsetOptions();
    $product->setHasOptions(1);
    $product->setCanSaveCustomOptions(true);
    $product->getResource()->save($product);
    $product->setOptions(array());
    foreach ($options as $arrayOption) {
        $option = $this->option->create()
            ->setProductId($product->getId())
            ->setStoreId($product->getStoreId())
            ->addData($arrayOption);
        $option->save();
        $options[] = $option;
        $product->addOption($option);
    }