Why Do the Authors of Your Text Refer to the Actor/observer

Why do the authors of your text refer to the actor/observer difference as "an interesting twist on the fundamental attribution error"?

A) When we take the perspective of actors,we are more likely to make the fundamental attribution error.
B) Our perspectives as actors versus observers influence the extent to which we make the fundamental attribution error.
C) Actors-but not observers-are more likely to make the fundamental attribution error in explaining their failures.
D) Observers who see the world through actors' eyes are susceptible to the fundamental attribution error.