Consider the following statements comparing the Rigvedic Aryans with the Harappan Civilisation:

1. The Rigvedic Aryans used protective gear such as a coat of mail and helmet in warfare, a usage not attested among Harappan finds.

2. The Harappans worked with iron tools, while the Rigvedic Aryans of this early period did not.

3. The horse had been domesticated by the Rigvedic Aryans, but there is no clear evidence of this among the Harappans.

Which of the statements given above are correct?