Under ASC 410-20, when must a company recognize the fair value of a liability for an asset retirement obligation?

Question 13 options:

1)	In the period it is offered whether or not they accept in the same period.

2)	In the period it is incurred if a reasonable estimate of fair value cannot be made.

3)	In the period after it is acquired.

4)	In the period it is incurred if a reasonable estimate of fair value can be made.