Which of the Following Statements Is True with Regard to Trichotillomania

Which of the following statements is true with regard to trichotillomania?

A) People with trichotillomania are least likely to be upset by their uncontrollable behavior.
B) The impairments of people with trichotillomania appear only in late adulthood.
C) Trichotillomania may be underreported because people with this disorder tend to engage in hair-pulling only when alone.
D) Heritability plays no role in trichotillomania.