The word "pinpoint" (Para. 1) basically means ______.

A．People are better described in cold, objective terms.
B．The difficulty of getting to know a person is usually underestimated.
C．One should not judge people by their appearances.
D．One is usually subjective when assessing other people's personality.

A．People do not reveal their true self on every occasion
B．in most cases we should avoid contacting the observed person directly
C．the best way to know a person is by making comparisons
D．face-to-face interaction is the best strategy to uncover information about a person