The Preamble is non-justiciable and not enforceable in courts (Option A is correct). However, Option B is wrong - the Supreme Court has ruled that the Preamble IS part of the Constitution (Kesavananda Bharati case). Option C is also incorrect - the Preamble has been amended only once (42nd Amendment, 1976) to add 'socialist', 'secular', and 'integrity'. Option D 'All of these' cannot be correct when B and C are wrong.