With reference to the economy of Harappan Civilisation, consider the following statements:

1. Iran was the trading outpost of Harrapans with other civilizations.

2. Pictures of ships, boats have also been found on seals that throw light on Harappan contacts in far-off places.

3. Although trade was well developed, however the main occupations of the Harappan people were agriculture and the domestication of animals.

Which of the statements given above is/are correct?