This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Folie a deux is seen in 
Select and explain. 
A. OCD, B. Paranoid, C. Hysteria, D. Neurasthenia
B: Paranoid
Answer: B: Paranoid 
Explanation: It is shared delusional disorder.