A nurse is teaching the guardian of a school-age child who has autism spectrum disorder about a new prescription for risperidone. Which of the following statements by the guardian demonstrates an understanding of the teaching?

A. "This medication will help control my child's aggressive behavior." Risperidone is an atypical antipsychotic that is commonly prescribed to manage irritability, aggression, and self-injurious behaviors in children with autism spectrum disorder (ASD). It helps reduce behavioral disturbances, improving overall functioning. B. "This medication can cause my child to have low blood sugar." Risperidone is more commonly associated with metabolic side effects such as weight gain and an increased risk of high blood sugar (hyperglycemia), rather than low blood sugar (hypoglycemia). Regular monitoring of weight and blood glucose levels may be necessary. C. "This medication won't require my child to have routine lab tests." While risperidone does not require frequent lab monitoring like some other antipsychotics (e.g., clozapine), periodic assessments of metabolic parameters, including blood glucose, cholesterol, and liver function, may be necessary due to its potential side effects. D. "This medication might need to be increased if my child has muscle spasms." Muscle spasms, or extrapyramidal symptoms (EPS), can be a side effect of risperidone. If EPS occur, the medication might need to be reduced or adjusted, rather than increased. Additional medications, such as benztropine, may also be considered to manage EPS.