This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
A 21 year old student is taking 3 mg risperidone for schizophrenia since 2 months. It was the first episode and the patient is asymptomatic now. There is no family history of any psychiatric disease. How long risperidone should be continued in this patient? 
Select and explain. 
A. At least 6 months of symptom remission, B. At least 12 months of symptom remission, C. 2 years, D. 5 years
B: At least 12 months of symptom remission
Answer: B: At least 12 months of symptom remission 
Explanation: American Psychiatry Association recommendations for duration of antipsychotic treatment: *For first episode, medication discontinuation can be done (after at least 1 year of symptom remission or optimal response while taking medication) with close follow-up and with a plan to reinstitute antipsychotic treatment on symptom recurrence. *Indefinite maintenance antipsychotic medication is recommended for patients who have had multiple prior episodes or two episodes within 5 years. REF: Clinical pratice giudelines by APA