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
Bruxism should be treated by night guard using: 
Select and explain. 
A. Hawley's retainer, B. Occlusal splint, C. Double occlusal splint, D. All of the above
B: Occlusal splint
Answer: B: Occlusal splint 
Explanation: None