With reference to Jain Architecture, consider the following statements.

1. The oldest Jain pilgrimage sites are to be found in Bihar. 

2. Maharashtra has a rich heritage of Jain shrines and at Shravanabelagola the famous statue of Gomateshwara.

3. The Jain temples at Mount Abu were constructed by Chandragupta Maurya.

Which of the statements given above is/are correct?