Rebecca is a sweet little girl but her parents are worried that there is something wrong. She gets very upset if routines are not followed and they have noticed that she likes spinning around. She often avoids eye contact and is not particularly interested in other children. She was late to speak and still often refers to herself in the third person. They mentioned their concerns to their pediatrician. She thinks Rebecca may meet diagnostic criteria for: a. ADHD b. Asperger's Disorder c. Autism Spectrum Disorder d. Social Anxiety Disorder