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: Medicine
Frecieuncy of Rest tremor in Parkinson's disease is - 
Select and explain. 
A. 2/sec, B. 14/sec, C. 4-6/sec, D. 8/sec
C: 4-6/sec
Answer: C: 4-6/sec 
Explanation: None