This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
All the following are risk factors for fetal overgrowth except 
Select and explain. 
A. Obesity, B. Diabetes, C. Primiparity, D. Previous macrosomic infant
C: Primiparity
Answer: C: Primiparity 
Explanation: Risk Factors for Fetal OvergrowthObesityDiabetesPostterm gestationMultiparityLarge size of parentsAdvancing maternal agePrevious macrosomic infantRacial and ethnic factorsReference: William's Obstetrics; 25th edition; Chapter 44; Fetal-Growth Disorders