In which of the following cases did the Supreme Court hold that the principles of natural justice are…

In A. K. Kraipak vs Union of India, the Supreme Court held that the dividing line between quasi-judicial and administrative functions is thin and that the principles of natural justice apply to administrative proceedings to prevent miscarriage of justice. A. K. Gopalan vs State of Madras took a narrow view of procedure established by law under Article 21 and rejected reading natural justice into it, while M. C. Mehta vs Union of India and Smt. Indira Nehru Gandhi vs Raj Narain did not establish this rule.