Which Statement About Autism Spectrum Disorder Is TRUE

Multiple Choice

Which statement about autism spectrum disorder is TRUE?

A) It is likely that autism spectrum disorder is caused by the MMR vaccine.
B) It is clear that the cause of autism spectrum disorder is solely genetic.
C) Of all 8-year-old children in the United States, approximately 1 in 1500 have been diagnosed with autism spectrum disorder.
D) Autism spectrum disorder is known to be highly heritable.