For Years It Has Wrongly Been Assumed That Clients with Co-Occurring

For years it has wrongly been assumed that clients with co-occurring disorders

A) who are addicted share the same motivational traits as persons without a psychiatric problem who are addicted.
B) who abuse chemicals have the same motivational traits as persons who are addicted to chemicals.
C) who have a job are less motivated to quit than those without a job, since their stress level is higher.
D) do not abuse chemicals for the same reason(s) over the years.