This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
[{'content': 'Which of the following two muscles contract together while climbing a tree? \nSelect and explain. \nA. Latissimus dorsi and trapezius, B. Teres major and minor, C. Teres major and pectoralis major, D. Latissimus dorsi and Pectorals major', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Latissimus dorsi action: Adduction, extension, and medial rotation of the shoulder as in swimming rowing, climbing, pulling, folding Pectoralis Major: Helps in climbingRef: BD Chaurasia; Volume 1; 6th edition; Table: 3.2 and 5.2', 'role': 'assistant'}]