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 is most common among all psychiatric disorders? 
Select and explain. 
A. Depression, B. Anxiety disorder, C. OCD, D. Delusional disorder
B: Anxiety disorder
Answer: B: Anxiety disorder 
Explanation: Anxiety disorder are the most common among all psychiatric disorders and among the group of anxiety disorders, Phobias are the most common.