A Psychologist Is Working with a Person Who Has Been

A psychologist is working with a person who has been diagnosed as having bipolar I disorder.When the psychologist looks at the clinical history of the blood relatives of this person,she would not be surprised to find:

A) that there is evidence of similar symptoms being displayed in the person's relatives
B) that there is no evidence whatsoever of depressive symptoms in the relatives
C) if there is evidence of depression or mania-it is no more likely to be found in blood relatives than it is in close friends of the family
D) that there is evidence of other genetic problems, such as Down syndrome