The former diagnosis of Asperger's disorder is characterized by impairment and oddity of social interaction and restricted interest and behavior. Unlike the format autistic disorder, in Asperger's disorder, which of the following is true?
a. There are no significant delays in language or cognitive development.
b. Asperger's disorder affects girls more than boys
c. There are stereotypical movements present.
d. There are significant delays in language.