Which of the following statement(s) is/are correct?
1. Dhupgarh is the highest peak of the Satpuras lying North-west of Pachmarhi.
2. The Chotanagpur Plateau is composed of Archaean granite and gneiss rocks with patches of Dharwar rocks.
3. The highest elevation of the Chotanagpur Plateau is found in the mid-western portion known as the Pat lands.
Select the correct answer from the following: