This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Which of the following Autism spectrum disorders has normal IQ and language skills? 
Select and explain. 
A. Rett's syndrome, B. Asperger's syndrome, C. Heller's syndrome, D. Munchausen syndrome
B: Asperger's syndrome
Answer: B: Asperger's syndrome 
Explanation: Asperger's syndrome does not have any language disturbances & mental retardation.