According to the Authors of Your Text, Introspection May Not

According to the authors of your text, introspection may not be an especially useful source of information about the self because people

A) may not be consciously aware of the reasons for our behavior.
B) cannot be at once the observer and the object observed.
C) are driven by unconscious self-enhancing motives.
D) know that introspection uses up valuable cognitive resources.