_____ Is Considered an Atypical Form of Autism in Which

_____ is considered an atypical form of autism in which some but not all classic signs are observed, therefore not meeting the criteria for a specific diagnosis; characterized by varying degrees of impairment in communication skills and social interactions, sensitivities to sights and sounds, and restricted, repetitive, and stereotyped patterns of behavior

A) Autistic disorder (classic autism)
B) Childhood disintegrative disorder
C) Rett syndrome
D) Asperger's syndrome
E) Pervasive developmental disorder not otherwise specified