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
Fear of dark is called 
Select and explain. 
A. Nyctophobia, B. Ailurophobia, C. Photophobia, D. Agoraphobia
A: Nyctophobia
Answer: A: Nyctophobia 
Explanation: Nycto phobia : Fear of dark.
Ailuro phobia : Fear of cats.
Photo phobia : Fear of light.
Agora phobia : Fear of places from which escape is different.