Consider the following statements on the late Harappan cultures :
- IThe late Harappan cultures are primarily Chalcolithic in which tools of stone and copper are used.
- IIThey do not show metal objects requiring complicated casting.
- IIIThe Chalcolithic people in the later Harappan phase lived in villages.
- IVIn the late Harappan phase at Bhagwanpura in Haryana, burnt bricks were not found.
Which of the above statements are correct ?

