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': 'Which upper limb muscle spans across shoulder and elbow joint? \nSelect and explain. \nA. Coracobrachialis, B. Biceps brachii, C. Lateralheadoftriceps, D. Brachialis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is'b'i.e., Biceps brachiiMuscles that cross both shoulder and elbow are biceps (complete muscle, i.e. sho head and long head) and triceps (only long head crosses the shoulder).", 'role': 'assistant'}]