def reply_to_rt_requestors(rt_resource, rt_ticket_id, rt_requestors, rt_message):
    """
    Given an RT ticket ID, a list of RT requestors, and a response message,
    send a private email to the requestors with the provided message.
    The message will be recorded in RT, but will not be sent to any other 
    watchers of the queue.

    :param rt_resource: the RTResource object to use
    :param rt_ticket_id: the ticket ID as it appears in RT
    :param rt_requestors: the list of original RT ticket requestors to email
    :param rt_message: the message to reply back to them about
    """
    params = {
        'content': {
            'Action': 'comment',
            'Text': rt_message,
            'Cc': rt_requestors,
            'Bcc': '',
        },
    }
    response = rt_resource.post(path='ticket/' + rt_ticket_id + '/comment', payload=params,)
    return response