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It's A. Secondary negative symptoms are caused by positive symptoms.

Explanation: Antipsychotics have limited effects on negative symptoms. Their effect is strongest when the negative symptoms are caused by positive symptoms (termed “secondary negative symptoms”). For example, a person who is socially withdrawn due to paranoia might increase social activities when less paranoid. There are no proven treatments for negative symptoms that persist after response to treatment with antipsychotics. However, because some neurological side effects of antipsychotics (e.g., akinesia, expressionless face) and sedation resemble primary negative symptoms, treating or minimizing these side effects can improve ratings of negative symptoms.

Muskin PR and Dickerman AL, eds. Study Guide to Psychiatry: A Companion to the American Psychiatric Publishing Textbook of Psychiatry, Sixth Edition. Arlington, VA: American Psychiatric Association Publishing; 2015: 35, 226. Click here to purchase. Members can purchase at a discount.