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: Gynaecology & Obstetrics
Screening test for gestational diabetes is? 
Select and explain. 
A. Oral glucose tolerance test, B. Fasting blood sugar, C. Glycocyalted hemoglobin measurement, D. Random glucose challenge
D: Random glucose challenge
Answer: D: Random glucose challenge 
Explanation: Random glucose challenge REF: Dutta 6th ed p. 285 "Screening for GDM is done by a random glucose challenge with 50 grams oral glucose irrespective of time of day"