Consider the following statements with reference to Compressed BioGas (CBG), promoted under the SATAT initiative by the Government of India:
- CBG can be naturally produced through the anaerobic decomposition of biomass without the need for mining.
- The major constituent of CBG is methane.
- CBG faces a key challenge in that it has a substantially lower calorific value than Compressed Natural Gas (CNG).
Which of the above statements is / are correct?