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 :

1. (a)1 only
2. (b)1 and 2
3. (c)2 and 3
4. (d)3 only