This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Muscles of arm and forearm region & Cubital fossa, Subject name: Anatomy
[{'content': 'The structure that lies lateral to distal radial tubercle \nSelect and explain. \nA. Extensor pollicis longus, B. Extensor carpi radialis longus, C. Brachioradialis, D. Extensor carpi ulnaris', 'role': 'user'}, {'content': "Answer: B \nExplanation: The structure that lies lateral to distal radial tubercle are: Tendons of Extensor carpi radialis brevis and longus. Distal radial tubercle (Lister's tubercle) is located at the distal dorsal aspect of the radius It is a bony prominence that can be easily palpated. Function: It acts as a pulley for the Extensor Pollicis Longus tendon, changing it's mechanical direction of action.", 'role': 'assistant'}]