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
Autism is -a) Neurodevelopmental disorderb) Social and language communication problemc) Metabolic diseased) Mainly due to hypothalamus damage 
Select and explain. 
A. ac, B. a, C. ad, D. ab
D: ab
Answer: D: ab 
Explanation: None