Kerry Suffers from Depression

Kerry suffers from depression. He is experiencing delusions that his brain is deteriorating and that he is aging quickly. These delusions

A) suggest that he is suffering from a bipolar rather than a unipolar disorder.
B) are typical of depressive delusions because they are mood-congruent.
C) are most likely to persist after the depression remits.
D) are uncommon in depression and suggest a diagnosis of schizophrenia.