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': 'Superficial veins of the upper limb are located in which plane? \nSelect and explain. \nA. Subcutaneous, B. Intra fascial, C. Sub fascial, D. Intramuscular', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The major superficial veins of the upper limb are the cephalic and basilic veins. They are located within the subcutaneous tissue of the upper limb. ref - BD chaurasia 6e p81', 'role': 'assistant'}]