What are the five possible states of the FAST controller?

What are the five possible states of the FAST controller?

A.
Enabled, Disabled, Disabling, DisabledwithError, Degraded

B.
Enabled, Enabling, Disabled, DisabledwithError, Degraded

C.
Enabled, Disabled, Disabling, DisabledwithError, Error

D.
Enabled, Disabled, Disabling, DegradedwithError, Degraded