With reference to the above information, consider the following statements:
1. Some supporters of 'party X' knew Z.
2. Some supporters of 'party X', who opposed Z's campaign strategy, knew Z.
3. No supporters of 'party X' supported Z's campaign strategy.
Which of the following given above is/are not correct?
1. 1 only
2. 2 and 3 only
3. 3 only
4. 1, 2 and 3