A person shall be deemed to be in legal custody while he or she is—
(a) confined in or being taken to or from any correctional facility in which he or she may be lawfully confined; or
(b) working or is, for any other reason, outside the correctional facility in the custody or under the control of a correctional officer; or
(c) being taken to any place to which he or she is required or authorized by or under this Act to be taken; or
(d) kept in custody in pursuance of the requirement or authorization under paragraph (c).