'Self-Concept Theory', Was Developed by Shamir Et Al

'Self-concept theory', was developed by Shamir et al. (1993) from House's (1976) earlier work. What is the basis of the theory?
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A) That the individual needs to consider the self first in order to ensure their needs are met first
B) The idea rests on the presumption that humans create mental images of themselves and seek ways of affirming and reinforcing this self-identity
C) That the individual presumes that their interpretation of the world is an accurate and the only way of interpreting the world around them.
D) That the needs of others rather than the self need to be the focus of leadership and that affirming and reinforcing the needs of others is key to self-concept