The pediatric nurse practitioner suspects autism spectrum disorder in a 2-year-old patient. The nurse practitioner should:
a. Refer the patient for further neurodevelopmental evaluation if symptoms persist at the 3-year-old health maintenance visit
b. Promptly refer the patient for further detailed neurodevelopmental evaluation
c. Recommend that the patient receive no further immunizations
d. Assist the family in locating a long-term placement facility