Consider the following statements:

1.The annual rainfall variability increases as we move from east to west over India.

2.The annual rainfall variability decreases as we move from east to west over India.

3.Variability of less than 25% exists on the western coasts, Western Ghats, North eastern peninsula.

4.Variability of over 50% exists on the western coasts, Western Ghats, North eastern peninsula.

Which of the statements given above is/are correct?