This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intellectual disability, communication, autism, and ADHD, Subject name: Psychiatry
All are true about autism EXCEPT: 
Select and explain. 
A. Age between 18-24 months, B. Child is able to interact, C. Repetitive behavior is seen, D. Language is not well developed
B: Child is able to interact
Answer: B: Child is able to interact 
Explanation: ANSWER: (B) Child is able to interactREF: Kaplan & Sadocks Synopsis of Psychiatry 10tEl Edition p. 1194, Current Diagnosis & Treatment in Psychiatry Chapter 37Major Diagnostic Features of Dsm-iv Pervasive Developmental DisordersFeatureAutisticDisorderAsperger'sDisorderChildhoodDisintegrativeDisorderRett'sDisorderPervasive Developmental Disorder NOSSocial impairment+++++Language or communication disorder+ +++Repetitive interests and activities+++++Onset prior to 36 months+ + Average intelligence + Period of normal development +-t- Loss of skills in several areas +