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: Pediatrics
[{'content': 'Deficiency of growth hormone leads to –a) Delayed fusion of epiphysisb) Proportionate dwarfismc) Acromegaly d)  Mental retardation \nSelect and explain. \nA. ac, B. a, C. ab, D. bc', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Delayed closure of the epiphysis permits growth beyond the normal age when growth should be complete.\nThere is proportionate shortening.', 'role': 'assistant'}]