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
[{'content': 'Which of the following is not a component of carpal tunnel? \nSelect and explain. \nA. Ulnar nerve, B. Median nerve, C. Flexor digitorum superficialis, D. Flexor digitorum profundus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A Ulnar nerveRef: Gray's Basic Anatomy E-book, P 399Carpal Tunnel Anatomy* Posterior border# Carpal bones* Anterior border# Transverse carpal ligament* Boundaries# Proximally--pisiform and tubercle of navicular# Distally--hook of hamate and tubercle of trapezium* Contents# Flexor digitorum superficialis# Flexor digitorum profundus# Flexor pollicis longus# Median nerve", 'role': 'assistant'}]