Given below are the four statements each with two blanks. Select the option which correctly fills up the blank in any two statements.
A. Bhopal gas disaster took place on ____(i)____ 1984 and this day is now observed as the ____(ii)____ day in India.
B. ____(i)___ is degradable pollutant while ____(ii)_____ is non-degradable pollutant.
C. When pollutants are released from a single point is called ___(i)____ pollution, but when it is over a large area, then it is called ____(ii)____ pollution.
D. ___(i)___ is the world's most problematic aquatic weed, introduced in India for their lovely flowers, also called ____(ii)___ of Bengal.
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