In which of the following cases, the Supreme Court observed that, 'When there is a state of uncertainty due to the lack of data or material about the extent of damage or pollution likely to be caused, then in order to maintain the ecological balance, the burden of proof that the said balance will be maintained must necessarily be on the industry or the unit which is likely to cause pollution'?

• A. M.C. Mehta Vs. Union of India.
• B. Olga Tellis Vs. Bombay Municipal Corporation.
• C. Taj Trapezium case.
• D. None of the above.