Which of the following are point sources of pollution in rivers?
1. Surface drains carrying municipal sewage
2. Run-off from agricultural fields
3. Dumping of un-burnt/half-burnt dead bodies
4. Dhobi ghats
5. Effluents from industries
Select the correct answer using the code given below.
1
1 and 5 only
2
2, 3 and 4 only
3
1, 2, 3 and 4 only
4
1, 4 and 5 only