Which class of persons does Section 18, Indian Evidence Act lies down who can make admissions? I. Party to the proceeding II. Agent authorised by a party III. Party suing or sued in a representative character, making admissions while holding such character IV. Persons who has any proprietary or pecuniary interest in the subject-matter of the proceedings, during the continuance of such interest V. Persons from whom the parties to the suit have derived their interest in the subject- matter of the suit, during the continuance of such interest