Consider the following statements about hill ranges of peninsular India:

1. The Amarkantak Hills mark the point of confluence of the Sahyadri (Western Ghats) and the Vindhya ranges.

2. The Biligirirangan Hills lie at the point where the Western Ghats meet the Satpura Range.

3. The Seshachalam Hills form part of the Western Ghats.

How many of the above statements are correct?