Ava has schizophrenia, but before her illness became severe she was originally, and incorrectly, diagnosed as having major depressive disorder. Which pattern of symptoms most likely led to the incorrect diagnosis?
A. Ava had blunted affect and often experienced a catatonic stupor.
B. Ava had flat affect but had not yet developed any positive symptoms of psychosis.
C. Ava had trouble following through on plans and occasional auditory hallucinations.
D. Ava had disordered behavior, disorganized speech, and a lack of emotional expression.
Answer: B
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