In Time, the Consensus Emerged Among Experts That the "Appearance

In time, the consensus emerged among experts that the "appearance" of behavioral inconsistency arose primarily because

A) of failures to take into account the psychological features of situations.
B) most measures of personality lack reliability and validity.
C) the observers of the people in the situations were not adequately trained to make accurate observations.
D) people are simply not all that consistent in their behavior patterns.