Lie In Ambush trigger

By aermet69, in Imperial Assault Rules Questions

Lie%20in%20Ambush.png

So I was testing this the other day, and suddenly got confused by the exact wording on the trigger (not sure if this is mentioned in the other LiA timing thread).

So does this trigger when I have:

A: 3 or more exhausted groups OR 3 or more defeated groups?

B: 3 or more exhausted and/or defeated groups?

3 or more (exhausted or defeated) groups.

In other words, If the amount of your exhausted or defeated groups adds up to a total number that is 3 or more after your opponent activates a group, you have to deploy the figures with LiA attached.

Example: You have 1 group defeated and 2 groups activated after your opponent activates a group, LiA will trigger.