Consider the following statements about the Stone Age in India:1. Different periods are identified on the basis of the type and technology of stone tools.2. There are no regional variations in the type and technology of tools in different periods.3. Stone Age cultures of different periods evolved uniformly in a near unilinear fashion all over the subcontinent.Which of the statements given above is/are correct?

• A. 1 only
• B. 1 and 2 only
• C. 3 only
• D. 1, 2 and 3