Consider the following statements about the sedimentary rocks:

1. Sedimentary rocks are formed by lithification.

2. Coal deposits occur in river basins of the Damodar, Mahanadi, the Godavari in the Gondwana sedimentary deposits.

3. They hold the most informative geological records due to the marks left behind by various geophysical (weather patterns, wind, and water flow) and biological activities (fossils).

4. Granite, gabbro, basalt, are some of the examples of sedimentary rocks.

Which of these statements are correct?