Which of the Following Statements About Comorbidity Is Not True

Which of the following statements about comorbidity is not true?

A) Co-occurring internalizing and externalizing problems are more prevalent among females than among males.
B) Some experts question whether it makes sense to draw distinctions between anxiety and depression because rates of comorbidity are so high.
C) There is hardly any comorbidity among different psychosocial problems during adolescence within or across the broad categories (i.e., internalizing disorders, externalizing disorders, substance abuse) .
D) Substance abuse problems are likely to be comorbid with both externalizing and internalizing problems.