Consider the given information and answer the two items that follow.

No supporters of 'party X', who knew Z and supported his campaign strategy, agreed for the alliance with 'party Y'; but some of them had friends in 'party Y'.

With reference to the above information, which one among the following statements must be true?

Some supporters of 'party Y' did not agree for the alliance with the 'party X'.

There is at least one supporter of 'party Y' who knew some supporters of 'party X' as a friend.

No supporters of 'party X' supported Z's campaign strategy.

No supporters of 'party X' knew Z.