The Gandhi-Irwin Pact included which of the following?

1. Invitation to Congress to participate in the Round Table Conference.

2. Withdrawal of Ordinances promulgated in connection with the Civil Disobedience Movement.

3. Acceptance of Gandhiji's suggestion for an enquiry into police excesses.

4. Release of all political prisoners who are not convicted of violence

Select the correct answer using the code given below: