How Is Self-Efficacy Related to Health

How is self-efficacy related to health?

A) People who are generally efficacious are more resistant to disease than others.
B) It isn't; research by Bandura and colleagues failed to show any such relationship, just as they predicted.
C) One study showed that rapid acquisition of self-efficacy was associated with relatively high immunological status.
D) Self-efficacy affects health by acting through the self: a resilient self was associated with higher health status.