Indian Polity · Polity

With reference to the Whip system in Indian parliamentary practice, consider the following statements: I. The institution of the Whip finds mention neither in the Constitution of India nor in the Rules of Procedure of the Houses. II. A Whip may be issued in respect of all parliamentary business, including the election of the President of India. III. Disobedience of a direction issued by the Whip may, in certain circumstances, attract disqualification under the Tenth Schedule. Which of the statements given above are correct?