Which of the Following Is True of Biological Theories

Which of the following is true of biological theories?

A) They are similar to the mental illness criterion that argues there is a clear, identifiable physical process that differs from "health," and leads to specific behaviours or symptoms
B) They maintain that no relationship exists between the biological and psychological factors of abnormal behaviours
C) They are similar to a physical disease perspective and suggest that the abnormal behaviours are the result of poor health
D) They suggest that the causality of abnormal behaviours lies in both biological and psychological research