In any proceedings under this Act—
(a) any minutes appearing to be—
(i) minutes of the proceedings of any meeting of the planning authority or responsible authority; and
(ii) signed by the chairperson of the authority or the chairperson of a meeting of the authority either at the meeting at which the proceedings took place or at the next meeting; or
(b) a copy of or an extract from the minutes appearing to be certified to be a true copy by a person appearing to be the secretary of the authority—
is evidence—
(c) as to the meeting to which they refer having been duly convened or held; or
(d) of the persons attending the meeting having been members of the authority; or
(e) of the signature of the secretary or the chairperson or of the fact of his or her having been the secretary or chairperson.