One Way of Defining Mental Illness Across Cultures Is to Focus

One way of defining mental illness across cultures is to focus on behaviors that are rare and impairing.What is the most significant flaw with this definition?

A) Many forms of mental illness are actually quite common.
B) The disorders that are observed in one culture may not be observed in others.
C) Many forms of mental illness do not cause impairment.
D) This definition does not address the problem of somatization.
E) The definition does not address mutual constitution of culture and mental illness.