This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Orthopaedics
[{'content': 'All the following are features of achondroplasia EXCEPT: \nSelect and explain. \nA. Diminished trunk length, B. Brachycephaly, C. Exaggerated lumbar lordosis, D. Trident hand', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. Diminished trunk lengthAlthough the limbs are short in achondroplasia, trunk length (crown to pubis) is normal. The skull is brachycephalic, the face broad, and the bridge of the nose flattened, there is exaggeration of the normal lordotic curve of the lumbar spine. The digits of the hand are of equal length with the long and ring fingers spread forming a trident hand. Tibial and, less commonly, femoral bowing are also seen.', 'role': 'assistant'}]