Other than poaching, what are the possible reasons for the decline in the population of Ganges River Dolphins?1. Construction of dams and barrages on rivers2. Increase in the population of crocodiles in rivers3. Getting trapped in fishing nets accidentally4. Use of synthetic fertilizers and other agricultural chemicals in crop-fields in the vicinity of riversSelect the correct answer using the code given below.

Other than poaching, what are the possible reasons for the decline in

1.	Other than poaching, what are the possible reasons for the decline in the population of Ganges River Dolphins?1. Construction of dams and barrages on rivers2. Increase in the population of crocodiles in rivers3. Getting trapped in fishing nets accidentally4. Use of synthetic fertilizers and other agricultural chemicals in crop-fields in the vicinity of riversSelect the correct answer using the code given below.
A.	1 and 2 only
B.	2 and 3 only
C.	1, 3 and 4 only
D.	1, 2, 3 and 4
Answer» D. 1, 2, 3 and 4