With reference to the trade during the Harappan period, consider the following statements:
1. Shortughai was a Harappan trading outpost in Afghanistan.
2. There is literary as well as archaeo-logical evidence for the Harappan trade with Mesopotamia.
3. Lapiz lazuli was exported to the Persian Gulf from the Harappan sites in India.
Which of the statements given above is/are correct?