Consider the following statements

1. 1.The escalation of violence during the Assam movement against undocumented immigrants in Assam was a ground towards the for imposition of Emergency in 1975
2. 2.Justice J.C. Shah Commission was appointed to inquire into the excesses committed during the Emergency of 1975
3. 3.National emergency under Article 352 was declared in India for the first time in 1975

How many of the statements given above are incorrect?