Why Is It Difficult for People to Change Their Existing

Why is it difficult for people to change their existing models of management?

A) They are rarely in situations where their existing models of management fail to work as expected
B) They are almost always rewarded for behaving in ways that are consistent with their existing management models
C) There are no sources of information available to them about alternative management models
D) There are no real differences in management models, so there is no reason for them to change their existing management model
E) Their identities and emotions are too closely tied with the management models they have used in the past