Hello, hopefully some master could help me with this please ? My bosses gave me a difficult question and I can't find the answer in the standard .

Let say, I have a defined benefit plan to an ex employee. There are 3 possible way of payout upon reaching age of 65.
The current plan have liability of EUR411,000 and asset of EUR 100,000
1) full lump sum
2) fix monthly payment of EUR 1,500
3) if death at 65, the spouse will receive only EUR 700.
Another option is the employee can opt to get payout earlier than age of 65 but he will be getting EUR 1,500 at a reduced interest of 0.5%.

I have tried to ask brokers which option is possible to happen but they couldn't answer me too. How am I going to take into all possible payout options into accounting entry ?

Hope to get some help and advise on the accounting treatment .