Which of the following are true with respect to the Indian Peninsular Plateau?
- The southern plateau block is formed mainly of granite and gneiss
- The Deccan lava plateau is an elevated tableland consisting of horizontally arranged lava sheets
- The Malwa plateau dominates the Vindhyam scraps, forming the northern flank of the plateau
- The trough of the Narmada and Tapti are interposed between the Vindhyan and the Satpura ranges