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: Surgery
What is prolotherapy which is used for the treatment of TMJ discoloration: 
Select and explain. 
A. Regeneration injection therapy., B. Injection to paralyze the lateral pterygoid muscle., C. Thickening of joint therapy., D. All of the above.
A: Regeneration injection therapy.
Answer: A: Regeneration injection therapy. 
Explanation: Prolotherapy
Proliferation therapy
Regeneration injection therapy.
Principle:
Stimulation of joint tissue.
Organized | planned Microtrauma by Needle and By Chemicals .
So as to produce growth Function which regenerate/Rejuvenate the Joint.