3. In which of the following regions of India are shale gas resources found? 
 

1. Cambay Basin
2. Cauvery Basin
3. Krishna-Godavari Basin
 

Select the correct answer using the code given below.

1. 1 and 2 only

2. 3 only

3. 2 and 3 only

4. 1, 2 and 3

Correct Answer :

1, 2 and 3