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
Repetition of movements, act and words, phrases is: 
Select and explain. 
A. Fusion, B. Mannerism, C. Perseveration, D. Stereo-typing
C: Perseveration
Answer: C: Perseveration 
Explanation: Perseveration