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: Dental
Type of force in a patient activated appliance is? 
Select and explain. 
A. Interrupted, B. Intermittent, C. Continuous Interrupted, D. Continuous Intermittent
B: Intermittent
Answer: B: Intermittent 
Explanation: None