This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: obstetrics,pediatrics and geriatrics, Subject name: Social & Preventive Medicine
[{'content': 'What is the latest reference to body length in ICD-10 to call it perinatal moality rate? \nSelect and explain. \nA. 28cm, B. 30cm, C. 35cm, D. 38cm', 'role': 'user'}, {'content': 'Answer: C \nExplanation: parks textbook of preventive and social medicine 23rd edition * ninth revision of international classification of diseases (ICD) added that :(1) babies choosen for inclusion in perinatal statistics should be tjose above a minimum bih weight ie1000g at bih. (2)if bihweight is not available ,a gestational period of atleast 28weeks should be used if (1)&(2)is not available ,body length of atleast 35cm should be used .', 'role': 'assistant'}]