According to Your Textbook,which of the Following Does NOT Serve

According to your textbook,which of the following does NOT serve as evidence that autism spectrum disorder is a biological disorder?

A) The concordance rate for the disorder is much higher for identical twins than for fraternal twins.
B) Children with the diagnosis are more likely to have rare gene abnormalities than children without the diagnosis.
C) Some children with the diagnosis have abnormal amounts of antibodies in their blood,in contrast to children without the diagnosis.
D) The brains of children with the diagnosis do not appear to develop normally during adolescence.