Consider the following statements about the Peninsular river system:

1. It is believed to have originated from the Vindhya-Satpura axis water divide.

2. The rivers are much older than the Himalayan rivers.

3. It is characterized by broad, shallow and largely graded valleys representing senile topography.

4. The rivers/streams of this system have a low load carrying capacity and do not form deltas at their mouths.

Which of the above statements is/are correct?