Statement (A) and reason (R) type question.
(a) Both A and R are true and R is correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Statement A :- There is threat to the indigenous cat fish in our rivers
Reason R :- African cat fish (alien species) produces toxic effect for agriculture