This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Extremity, Subject name: Anatomy
Retraction of scapula is by which fibre 
Select and explain. 
A. Upper fibre of trapezius, B. Middle fibre of trapezius, C. Lower fibre of trapezius, D. Upper and Lower fibre of trapezius
B: Middle fibre of trapezius
Answer: B: Middle fibre of trapezius 
Explanation: Ans. B Middle fibre of trapezius* Retraction of scapula is done for middle fibres of trapezius musclesMuscles of Scapular Stabilization* Trapezius:# Retraction (M)# Elevation (S)# Depression (I)# Upward rotation (S, M)* Rhomboid--retraction* Levator scapular--elevation* Pectoralis major--protraction* Serratus anterior--Protraction