Which of the Following Is Not True with Regard to the Prevalence

Which of the following is not true with regard to the prevalence of COMDs:

A) the prevalence is rising due to the increase in PTSD
B) nearly ¼ of those with a serious mental disorder have a co-occurring substance use disorder
C) substance use disorder treatment providers estimate that nearly half of their patients have a diagnosable mental disorder
D) patients with a substance use disorder are much more likely to have a COMD than adults who do not have a substance use disorder