Assertion (A): DEMs can be derived from both satellite and terrestrial data sources.
Reason (R): DEMs typically suffer from scale and resolution issues which affect their accuracy.
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.
5
Question Not Attempted