In a Study by Elizabeth Loftus, Subjects Watched a Film

In a study by Elizabeth Loftus, subjects watched a film of an automobile accident, then answered a series of questions, including one asking them to estimate the speed of the cars. What factor affected the subjects' estimate of how fast the cars in the film were traveling?

A) Whether the driver of the car was male or female.
B) Whether they had ever been an eyewitness to an auto accident.
C) Whether the words used in the question suggested greater speeds (e.g.contacted vs.smashed) .
D) Whether the researcher was friendly or rude.