Question: Which of the following is not an accurate statement regarding nonsyndromal intellectual disability? A. Both genes and environment can contribute to the development of nonsyndromal intellectual disability. B. Familiality is supported for mild, moderate, severe, and profound intellectual disability. C. Environmental contributors include teratogens, fetal alcohol syndrome, and perinatal complications. D. Nonsyndromal intellectual disability occurs without the presence of neurological, physical, or metabolic abnormalities