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: Dental
Which of the following is not a type of cerebral palsy: 
Select and explain. 
A. Spasticity, B. Autism, C. Ataxia, D. Athetosis
B: Autism
Answer: B: Autism 
Explanation: None