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
A man feels his neighbor is following him and planning to kill him. This history is suggestive of : 
Select and explain. 
A. Delusion of reference, B. Delusion of persecution, C. Delusion of infidelity, D. Delusion of guilt
B: Delusion of persecution
Answer: B: Delusion of persecution 
Explanation: Delusion of persecution : Patient believes that someone is going to harm him, his family or his property. It is the most common type of delusion.