The correct option is C A - Bhopal, B - 1984
The Bhopal gas tragedy is known as one of the world's worst industrial disasters and was India’s first major industrial disaster. The disaster occurred on December 2, 1984, when methyl isocyanate leaked out from Union Carbide India Ltd.’s (UCIL’s) pesticide factory in the city of Bhopal.
About 45 tons of a toxic gas known as methyl isocyanate (MIC) was leaked into the air during the disaster. Being highly reactive to heat, the gas leakage turned the entire city into a colossal gas chamber. The final death toll was approximately between 15,000 and 20,000.