Which of the following geographical features or phenomena is/are associated with the Peninsular Block of India?
1. Submergence of parts of the western coast due to tectonic activity
2. Presence of residual mountain ranges such as the Veliconda hills and Mahendragiri hills
3. Deep, V-shaped river valleys formed by fast-flowing rivers

Select the answer using the code given below :

Correct Option: (b) 1 and 2

Statement 1 is correct because parts of the western coast of the Peninsular Block have submerged beneath the sea due to tectonic faulting and down-warping activities. Statement 2 is correct because the Peninsular Block features numerous ancient residual hill ranges, such as the Veliconda hills and Mahendragiri hills, representing remnants of ancient folded structures. Statement 3 is incorrect because the rivers of the Peninsular Block flow over ancient, stable plateaus and have attained graded profiles with broad, shallow valleys rather than deep, V-shaped valleys characteristic of young youthful fold mountain rivers. Therefore, statements 1 and 2 are correct, making option (b) the right choice.