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: Anatomy
[{'content': 'Protractor of scapula is? \nSelect and explain. \nA. Serratus anterior, B. Rhomboidis major, C. Deltoid, D. Pectoralis major', 'role': 'user'}, {'content': "Answer: A \nExplanation: Serratus anteriorREF: Gray's anatomy 39th ed p. 829, 830Movements of scapula:MovementMusclesElevationTrapezius and Levator scapularProtractionSerratous anterior and Pectoralis minorRetractionRhomboids and TrapeziusLateral rotationupper trapezius and lower serratousMedial rotationLevator scapulae , Rhomboids and Pectoralis minor", 'role': 'assistant'}]