In which of the following landmark judgement the Supreme Court laid down a test for declaring an entity as an Industry?
1
Olga Tellis & Ors v. Bombay Municipal.
2
D.K. Yadav v. J.M.A. Industries Ltd.
3
Bangalore Water Supply and Sewerage Board vs. R Rajappa and others.
4
Arkal Govind Raj Rao vs. Ciba Geigy of India