Historically, Why Has Little Attention Been Paid to Childhood Psychopathology

Historically, why has little attention been paid to childhood psychopathology?

A) All signs of mental illness in children were assumed to reflect some developmental stage that would be outgrown.
B) Childhood disorders were viewed as childhood versions of adult disorders.
C) Society viewed children as inherently good and accepted all behavior unconditionally.
D) Mental illness was not recognized in children.