Mary Sees Greta Trip While Walking Down an Outside Flight

Multiple Choice

Mary sees Greta trip while walking down an outside flight of steps,and thinks to herself,"What a clumsy person!" Five minutes later,though,Mary trips on the same flight of steps,and says to an onlooker,"It's very icy today!" This is an illustration of the .

A) actor-observer effect
B) self-serving bias effect
C) blame avoidance principle