Consider the following statements regarding the evolution of different stages of Stone Age in Indian subcontinent?

1. Around 12,000 years ago men, women and children probably collected the grains as food and learnt where they grew.

2. The beginning of the Neolithic age dates back to 1,00,000 years ago.

3. People were familiar with the use of fire in Paleolithic age.

Which of the statements given above is/are correct?