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. Shale gas refers to natural gas that is trapped within shale formations. Several sedimentary basins in India have been identified as having potential shale gas resources. 2. Statement 1 is correct. The Cambay Basin, primarily located in Gujarat, is recognized as a key basin with significant shale gas potential in India. 3. Statement 2 is correct. The Cauvery Basin, located on the southeastern coast of India (mainly Tamil Nadu), is also identified as having promising shale gas resources. 4. Statement 3 is correct. The Krishna-Godavari Basin, located on the eastern coast of India (Andhra Pradesh), is considered one of the most important basins for shale gas potential in the country. 5. Since all three listed basins are known to possess potential shale gas resources, the correct option includes 1, 2, and 3.