What Did the Study of Gergely Et Al

What did the study of Gergely et al. (2002) on imitation in human infants find?

A) They imitate the motor aspects of the action, rather than the goal
B) Human infants fail to spontaneously imitate at all.
C) Human infants will imitate innate actions (e.g. yawning) but not arbitrary actions.
D) They imitate the goals of the action, rather than the motor aspects of the action