This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Child Psychiatry, Subject name: Psychiatry
The following observation can be seen in which of the following disease ? 
Select and explain. 
A. OCD, B. Tourette Syndrome, C. Rett syndrome, D. Anxiety disorder
B: Tourette Syndrome
Answer: B: Tourette Syndrome 
Explanation: Tourette's syndrome is a form of tic disorder in which there are multiple motor tics and one or more vocal tics. The most common comorbidity with Tourette's syndrome (Tourette's disorder) is ADHD followed by OCD. The onset is usually between 4 and 6 years of age, symptoms peak between 10 and 12 years of age.