With Regard to Assessing Self Efficacy, What Would Bandura State

With regard to assessing self efficacy, what would Bandura state?

A) Self-efficacy should reflect beliefs about using abilities and skills in specific circumstances and domains.
B) Self-efficacy is a dispositional trait that is stable across various contexts and domains.
C) Self-efficacy is ever evolving and constantly changing; therefore it can not be measured.
D) Self-efficacy should be measured in childhood so that appropriate changes in the environment can be made.