def _price_dish(dish):
    """
    Computes the final price for ordering the given dish, taking into account the requested
    quantity and options.

    Args:
        dish (dict): KB entry for a dish, augmented with quantity and options information.

    Returns:
        float: Total price for ordering the requested quantity of this dish with options included.
    """
    total_price = dish['price']
    if 'options' in dish:
        total_price += sum([option.get('price', 0) for option in dish['options']])
    return total_price * dish['quantity']