Based on research described in the Looking chapter, which of the following would be most likely to be useful to people in law enforcement who wish to reveal whether someone recognizes someone else

A) Show that the individual looks longer at a familiar face that at unfamiliar faces, all else being equal
B) Show that the individual uses smoother visual pursuit movements when visually tracking a familiar face than an unfamiliar face, all else being equal
C) Show that the individual exhibits more tremor when shown a familiar face than an unfamiliar face, all else being equal
D) Measure the OKN