This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical, surgical and gynaecological illness complicating pregnancy, Subject name: Gynaecology & Obstetrics
All are seen in gestational diabetes except 
Select and explain. 
A. Previous macrosomic baby, B. Obesity, C. Malformations, D. Polyhydramnios
C: Malformations
Answer: C: Malformations 
Explanation: Potential candidates for GDM Positive family history of diabetes Previous bih of an overweight baby >4 kg, Stillbih, Unexplained perinatal loss Polyhydramnios Recurrent vaginal candidiasis Persistant glycosuria Age>30 years Obesity Ethnic group Reference: D.C.Dutta&;s Textbook of Obstetrics; 7th edition; Page no: 281