(1) The person commanded by the writ may file a response in which he shall state whether he has the party in his custody, or under his power of restraint.
(2) If he has the party in his custody or under his power of restraint, he shall state the authority for and cause of such custody or restraint. If the detention is by virtue of a legal process, a copy thereof must be annexed to the response.
(3) If he had the party in his custody or under his power of restraint at any time prior or subsequent to the date of the writ, but has transferred such custody or restraint to another, the response must state particularly to whom, at what time and place, for what cause and by what authority such transfer took place.
(4) The response must be signed by the party making it or his attorney in accordance with the Rules of Civil Procedure governing the signing of pleadings.