Which of the following statements are correct?
I. Rann of Kachchh is formed by the recession of the sea
II. Kuchaman, Sambhar and Didwana are salt water lakes
III. Theland to the east of Aravallis is known as Bagar
IV. The fertile flood plains formed by small streams in Rajasthan are known as Rohi

Consider the following statements about Roaring Forties :
1. They are strong Westerly winds found in the oceans of Southern Hemisphere.
2. The strong east to west air currents are caused by the combination of air being displaced from the Equator towards the South Pole and the earth's rotation and abundance of landmasses to serve as wind breaks.
Which of the statements given above is/are correct ?