Assertion (A): Phytoremediation is a cost-effective method for remediation of large field sites.
Reason (R): Phytoremediation uses plants to degrade contaminants in soil, surface water, and groundwater.
1
Both A and R are true, and R is the correct explanation of A.
2
Both A and R are true, but R is not the correct explanation of A.
3
A is true, but R is false.
4
A is false, but R is true.