Which Evidence Is the MOST Problematic for the Psychodynamic Explanations

Which evidence is the MOST problematic for the psychodynamic explanations of depression?

A) Studies have shown a link between neurotransmitters and depression.
B) Dogs that had learned to be helpless displayed symptoms of depression.
C) Depression affects people whose childhood needs were met and who did not suffer a loss early in life.
D) Infant monkeys that were "raised" by a surrogate mother covered in terry cloth showed depressive symptoms when separated from the "mother."