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: Pathology
Which of the following statements is false in relation to myofacial pain dysfunction syndrome? 
Select and explain. 
A. Mainly affects young females, B. Is caused by muscle fatigue due to chronic oral habits as grinding and clenching, C. Treatment involves construction of occlusal guard and stress free emotional condition, D. The perioral musculature becomes hypotonic
D: The perioral musculature becomes hypotonic
Answer: D: The perioral musculature becomes hypotonic 
Explanation: None