Article 368 of the Constitution lays down the procedure for its amendment. Statement 1 is incorrect. A bill for the amendment of the Constitution can be introduced in either House of Parliament (Lok Sabha or Rajya Sabha), not just the Lok Sabha. Statement 2 is incorrect. Such a bill can be introduced either by a minister or by a private member (a member of Parliament who is not a minister). Statement 3 is incorrect. Article 368 expressly states that a joint sitting of both Houses of Parliament cannot be held for the purpose of deliberation and passage of a constitutional amendment bill. The bill must be passed separately by each House by a special majority. Since all three statements are incorrect, option D is the correct answer.