What Does the Term "Self-Concept" Refer To

What does the term "self-concept" refer to?

A) the way one believes others perceive her/his physiological, psychological, and social attributes
B) the sum of one's psychological, social, and physical attributes as perceived by a significant other
C) the sum of one's physiological, social, and psychological attributes as perceived by an impartial observer
D) the sum of one's beliefs about his/her physical characteristics, intelligence, aptitudes, and social skills