Which of the Following Is the Most Accurate Statement Regarding

Which of the following is the most accurate statement regarding the cause of autism?

A) In many cases of autism, organic factors (e.g., genetics, brain damage, etc.) have been found to cause autism.
B) In most cases of autism, a cause cannot be confirmed.
C) Inorganic factors, such as head trauma and exposure to environmental toxins, have been found to cause autism.
D) Autism is an autosomal recessive genetic disorder.