Which of the following is not a vested interest:
1
'A' stipulates that title in a property shall pass to 'C' on his death.
2
'A' stipulates that title in a property shall pass to 'C' on the death of 'B'
3
'A' stipulates that title in a property shall pass to 'C' if he marries 'B'
4
'A' stipulates that title in a property shall pass to 'C' after ten years.