A or D
A sounds risky
D sounds the safest
But is this some reverse psychology? By just following the Lu'Fels we can end up anywhere while A we at least know the threats we have to deal with.
On the other hand, it's not like things will stay the same if we stay, the Lu'Fels are leaving and the Destrobeasts are a huge red Flag.
[X] Follow the last few Lu'Fels leaving the area wherever they go, to provide overwatch while they provide protection.
In the end I just like our mammal friends too much. If we could convince them to remain with us I would change my vote (Lu'Fels ain't that smart so I doubt they have a plan on where they going) but I just don't think using our only Standard Action left or an Finest Hour is worth it.