This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'The most likely diagnosis in a 23 year old, mentally alert, mate dwarf with disproportionate arm and leg to body growth, prominent forehead and retruded maxilla is \nSelect and explain. \nA. Cretinism, B. Pituitary dwarfism, C. Acromegaly, D. Achondroplasia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]