This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb : Miscellaneous, Subject name: Anatomy
[{'content': 'Which of the following has epiphysis at BASE: \nSelect and explain. \nA. Distal phalanx, B. Middle phalanx, C. Thumb metacarpal, D. Third metacarpal', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Epiphysis is present on the heads of all metacarpals, except first metacarpal (Thumb) epiphysis is at the base. If Epiphysis is present at the head of the first metacarpal bone it is called as aberrant epiphysis which is a detion from the normal (and rarely found).', 'role': 'assistant'}]