When Determining Normality or Abnormality, What Does Almost Every Theoretical

When determining normality or abnormality, what does almost every theoretical orientation to psychology have in common?

A) the belief that American society contains the most abnormal and dysfunctional behavior
B) the belief that culture is responsible for most abnormal behaviors
C) the belief that the degree of dysfunctional behavior is what primarily determines abnormality
D) the belief that it is impossible to distinguish between normal and abnormal behaviors