Consider the following statement and identify the correct answer using the codes given below:
1) A micro region is the smallest of all planning regions.
2) A micro region lies at the lowest level of the hierarchy of planning regions.
3) A micro region has a natural boundary.
1
1 and 2 are correct
2
2 and 3 are correct
3
1 and 3 are correct
4
1 only is correct