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
Extended definition of perinatal moality includes crown heel length of? 
Select and explain. 
A. >15 cm at bih, B. > 25 cm at bih, C. > 35 cm at bih, D. > 45 cm at bih
C: > 35 cm at bih
Answer: C: > 35 cm at bih 
Explanation: Body length of atleast 35 cm should be used for perinatal moality rate.REF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-519