This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Which of the following is a Relaxation protein? 
Select and explain. 
A. Actin, B. Myosin, C. Tropomyosin, D. Dystrophin
C: Tropomyosin
Answer: C: Tropomyosin 
Explanation: Tropomyosin molecules cover all the active site of actin molecule. It is located in the groove between the two chains of actin. (REF: TEXTBOOK OF MEDICAL PHYSIOLOGY GEETHA N 2 EDITION, PAGE NO - 40)